"Always let your conscience be your guide!"
Jiminy was, for lack of better word, a little cricket drifter who traveled far and wide. He slept wherever he ended up, he ate whatever scraps he could find, his appearance and lifestyle were both arguably a little less than polished, but he certainly didn't seem to mind it much. In fact, life on the road had led him to enjoy a certain zest for life, not to mention a happy-go-lucky philosophy that nudged him to at least try to remain optimistic in spite of circumstances. Of course, he exercised a healthy skepticism, too, having no reason to believe that anything would really change for the better for him. He remained invested in pragmatism and didn't really believe in things like magic, fairy tale endings, or the concept of miracles. Or at least he didn't up until one night, when his travels found him hopping along into a peaceful little Italian village.
It was a sleepy little town, nothing all that special, save for its tucked away place under a clear sky full of stars. But what caught Jiminy's eye was the light of a fire inside a quaint little woodcarver's shop. So, drawn by his curiosity, the cricket slipped under the door of the shop to have a little look around - as well as warm himself up by the fire with hopes that he could safely spend the night. Upon closer inspection, he found himself impressed and charmed by the intricate works of the woodcarver (Mister Geppetto, respectively); mostly decorative little toy cuckoo clocks and wind-up music boxes, and even an adorable little marionette that Geppetto had apparently stayed up late to finish. Jiminy could only hide and keep out of sight of said shopkeep as he came out of his personal quarters, to put the finishing touches on the little puppet and give it a name: Pinocchio. Jiminy was mostly amused by the show Geppetto put on with the puppet, showing it off to his little cat, Figaro, and his goldfish, Cleo. But as the old man finally prepared for bed, he made a genuine wish upon a star that Pinocchio could actually come to life and maybe even become a real boy.
While everyone was sleeping, Jiminy was alerted by a strange light drifting into the shop. The mysterious light turned out to be none other than the fabled Blue Fairy, who had come from the star itself to grant Geppetto's wish. After the old man had spent so many years bringing happiness to others, she thought it only fair to bring him at least the chance for his dream to have a son come true. Of course, she could only animate Pinocchio and bring life to his puppet body. Whether or not Geppetto's wish for a real boy would come true would fall entirely on Pinocchio's actions, his moral decisions, and whether or not he listened to his conscience. When Pinocchio found himself puzzled as to what morals were, to what a conscience was, Jiminy couldn't seem to resist stepping in to inform him. Upon seeing a potential good influence in Jiminy, the Blue Fairy made him the offer of becoming Pinocchio's official conscience, in charge of guiding the little puppet onto the right path to become a real boy. Flustered, Jiminy accepted (though it wasn't as if the job hadn't come without its perks; a promise of a golden badge and a new change of clothes certainly worked to ease him into the position). The Blue Fairy left Pinocchio and Jiminy to the start of their new mission, which began in a bit of a loud clatter as Pinocchio wasn't entirely used to his newly animated body.
All the commotion woke Geppetto, who was of course overjoyed to see Pinocchio had come to life. The next morning, he even sent Pinocchio off to school with the other children (Jiminy unfortunately overslept). But Pinocchio was spotted by a pair of crooks by the names of Honest John and Gideon, who saw the wooden boy as a walking fortune waiting to be made when they sold him to a traveling puppeteer by the name of Stromboli. Persuading Pinocchio to ditch his plans for school and pursue life as an actor, they whisked him away to the theater - an effort that Jiminy attempted and failed to stop when Pinocchio chose to go with Honest John instead of heed Jiminy's advice.
Despite Jiminy's anger at having not been listened to, Pinocchio's performance actually turned out to be very successful. Wondering if perhaps he was wrong, if perhaps Pinocchio hadn't needed a conscience after all, he set off to slip quietly out of the wooden boy's life until he decided he wanted to wish him luck, as Stromboli intended to take their act on the road. It turned out to be a good thing that he went to Pinocchio; Stromboli had locked him up in a birdcage, and intended to use Pinocchio like a slave to make himself a fortune. After a failed attempt to pick the lock, Jiminy found it hard to remain optimistic. They were, for the most part, trapped on Stromboli's coach… up until the Blue Fairy appeared once more. A quick lesson in honesty and remembering the moral path led the Blue Fairy to helping them one last time, breaking them free from the birdcage and enabling them to escape Stromboli's grasp.
With his determination renewed, Pinocchio set off to race Jiminy home to get started on the right path to becoming a real boy! …Or at least, he did up until Honest John and Gideon caught up to him again, seeking out mischievous and stupid little boys to sell to a demented coachman for a profit. They feigned concern for the boy's mental health after his trauma at Stromboli's hands, and opted that he take some time off in order to get in the rest and relaxation needed to "heal". After convincing Pinocchio that he was in need of a vacation on Pleasure Island, where disobedient boys were taken to play and break things and run as rampant as they wanted, Pinocchio once again headed off, much to Jiminy's dismay. The ferry departed at midnight, and upon arrival at Pleasure Island the boys were allowed to run amok where carnival rides, food, drinks, and cigars and cigarettes were all free to anyone wishing to claim them. Smelling an obvious trap, Jiminy set off to search for Pinocchio…
And that would be around the time that he Woke.
Jiminy is always, at heart, an optimist. That should be known before anything else. Throughout his travels, he's adopted a sort of happy-go-lucky philosophy through which he chooses to see his life and circumstances, although this shouldn't be mistaken for naivete. While Jiminy is optimistic in regards to most things in life, he's also street wise enough to exercise caution where it's needed, and he utilizes a healthy amount of realism, of skepticism. This is a wise cricket who knows most of the in's and out's of shady characters, who knows that there's no such thing as a free lunch, and isn't lured into the traps and trimmings of dishonest intentions quite as easily as his charge, Pinocchio. He's demonstrated in canon that he didn't get to be trusted by the Blue Fairy by being easily duped, or stupid; Jiminy tries to keep on a smile and make the best of things a good lot of the time, but he's also practical and likes to think he's got both feet firmly on the ground.
In spite of that, though, Jiminy isn't without his sense of adventure or his sense of humor. Throughout a good lot of the story, Jiminy entertains himself by making jokes as well as one-liners, and he's obviously pretty amused by Geppetto and Figaro's investigation of the shop when he and Pinocchio make too much noise and have them thinking someone's broken in. He also entertains himself in Geppetto's workshop by investigating and playing with the clocks and music boxes, not to mention by singing to himself, so he's clearly not without a healthy sense of curiosity and he's not above loosening up and having fun. In fact, it seems he would rather do things in a way that make them more enjoyable even if it means wisecracking or making a song out of the lesson he attempts to teach.
But he also happens to know that there's a time and place for everything, and he's not the sort to put fun and games actively over important priorities and responsibilities. Nobody will catch Jiminy cutting corners or acting reckless for no reason, as he's a firm believer in doing things either the right way, or not doing them at all, as the alternative is the foolish way. He's the sort to tackle duties with a more upbeat attitude, to be certain, but if he sets out to do a job then you can bet that he does everything in his power to make sure that it's done. And you can also bet that he does everything in his power to make sure that it's done correctly. Obviously he wasn't chosen to be a conscience by the Blue Fairy for nothing; Jiminy's moral compass is pretty firmly decided on the honest path, and he tries his hardest to always do the right things, as he thinks that's one of the biggest problems the world has: not enough people listening to their conscience. Jiminy isn't without his flaws, of course. He can get a bit temperamental, not to mention a little rash when provoked enough - rash enough that size doesn't matter to him if he wants to knock someone's block off. And he may or may not have a strange attraction to human women, seeing as how he does a pretty bad job at hiding his attraction to the Blue Fairy. No, I'm not kidding.
But when it comes to his friends, like Pinocchio, Jiminy is just as dedicated to them as he is to his responsibilities as a guide and a conscience. In the face of the worst case scenario, Jiminy opts to remain faithfully by Pinocchio's side, even going so far as to try to keep the boy's spirits up when the situation looks bleak (as seen when he attempts to comfort Pinocchio when they're both trapped in Stromboli's birdcage). No matter how prone to trouble Pinocchio seems, thanks to his naivete and trusting nature, Jiminy doesn't fail to courageously follow close on his heels and try to bail him right back out.
Hardly any sort of danger fazes Jiminy where his friends are concerned, and it can safely be said that he will stay with them to the bitter end, even if it means putting his own life on the line. He shows this well enough when he risks getting crushed by a mallet-wielding cat (no that's not a joke either), trying to talk Pinocchio into going to school. Strangely enough, Jiminy doesn't seem to have much fear for those bigger than him, nor does he seem to fear the enormous world around him in spite of his diminutive size. He's a loyal, dependable and brave little cricket who won't let much stand in the way between him and the ones he feels attached to, especially if he feels like they might be in trouble or if he feels like they might be walking into danger.
Jiminy's main focus may be Pinocchio at the time, but it can be inferred that Jiminy doesn't struggle all that much to make friends in the right circumstances. Jiminy can be stern when he needs to be, and even outright aggressive when he's upset or provoked enough, but a good lot of the time he's a friendly and warm personality to just about everybody (provided he's sure that they won't try to step on him). He's polite and always opts for a good, friendly conversation. He's quite self-assured and charismatic, as well as confident - he's never really seen doubting or stumbling over himself, even after taking on such a strange task as playing a conscience for what was once an inert wooden puppet. He seems pretty sure that he's at least a sharp one even if there might be others out there yet who are sharper, and he's never one to turn down putting in a good effort or giving something the college try. You never know until you do buck up and try, after all! And to Jiminy, no harm ever came of putting in your best shot.
For his moments where he must be stern with Pinocchio to try and keep him on the right path, it's shown that Jiminy does have a kind, sympathetic heart as well as a lot of patience and understanding. Or at least, he seems to have an awful lot of patience given how prone to trouble his charge is, never really outright exploding on Pinocchio as much as he tries to be firm with him or let him learn by experience. Still, he likes to see people smile, and he likes to help the gloomy and destitute at least try to buck up when he can see they're feeling down. He lends a friendly ear and advice whenever it's needed, and tries his best to guide a friend that needs it in the right direction.
Uh, no real supernatural abilities here. Aside from the fact that he's a world-wise and talking/singing cricket. Other than that, he has the ability to hop pretty high and far, given those powerful little legs of his. He also tends to use that tiny little umbrella of his to sort of parasail through the air.