Ways The Splatoon Idols Stim - Both Helpful And Harmful
Callie - Helpful stims - hand waving, bouncing in her seat or bouncing her leg while seated, doing parts of their idol dances repeatedly (twisting her hips, doing the cheer jump, doing different hand movements, etc)
Callie - Hurtful stims - picking at the low tide scar on her eye, popping her prosthetic eye in and out and wearing it out or giving her an infection, scratching at her Octarian tattoo until it bleeds, chewing all the way through her tentacles and needing them trimmed professionally or needing hair extensions before a performance
Marie - Helpful stims - pen tapping, finger drumming, toe tapping, button clicking, switch flipping, joystick turning (literally just give her a fidget cube and she's happy), twirling her parasol, petting her tentacles when they're down
Marie - Hurtful stims - lip biting to the point of bleeding/stitches, pulling the trigger on a toy charger to the point of hand cramps and literal trigger finger, clawing her tentacles to shreds or clawing into her scalp to the point of bleeding
Pearl - Helpful stims - beat boxing noises, flicking zipper pulls (there's a reason the OTH stylist made their zippers so big), cracking her knuckles, bouncing around like Callie, kicking her feet while sitting, squeezing Marina's hand in a rhythm, biting Marina's tentacles (jaw strength is not enough to bite through)
Pearl - Hurtful stims - banging her head against walls to point of injury, biting her thumb until bleeding, punching walls until her knuckles bleed, screaming until hoarse or hurting herself
Marina - Helpful stims - Humming, keyboard typing, chewing pens (Pearl buys cheap ones in bulk), finger tapping, clicking her tongue, petting plushies (has multiple with different textures and fabrics), playing with silky tags in clothing (usually rubbing them against her fingers or together if there's more than one), playing with slime (floam and crunchy beads are her favorite textures but she will play with any kind) tinkering (using wrenches or screwdrivers, etc), squeezing Pearl's hand in a rhythm
Marina - Harmful stims - Biting her tentacles (does have the jaw strength to break through and hurt them, let's Pearl bite instead so they can both stim), biting claws until bleeding, scratching her thighs or shoulders until bleeding, tying her tentacles into knots and hurting the nerves inside, clawing at ears until bleeding (hence her always wearing headphones), running her fingers against sharp metal and cutting herself (has to wear protective gloves while tinkering to avoid this) biting her lip until bloody and needing stitches (Marie and Marina watch each other when they hang out and pull their lips away from their beaks when they notice each other gnawing)
Shiver - Helpful stims - playing with her fan (has multiple on standby considering how often she breaks them doing this), drumming her fingers, humming, feeling silky fabric, playing shamisen (the picking on the strings specifically), cricketing (rubbing ankles together) clicking her tongue, singing (lets her let out long notes without screaming and bugging people), playing with makeup brushes against her skin
Shiver - Hurtful stims - screaming, shrieking, scratching her tentacles (there's a reason they look choppy), biting her fan (she gets splinters in her mouth), scratching at her eyes or face, biting her tongue (doesn't do this anymore, Frye and Big Man would smack her gently on the back of the head once they realized what she was doing)
Frye - Helpful stims - dancing, stomping around, rocking, flapping her hands, running, spinning, holding her feet and rocking, singing, humming, beat boxing, bouncing her knee, toe tapping, finger tapping/drumming, gnawing on chewlery
Frye - Hurtful stims - gnawing on herself or her tentacles to point of injury, stomping hard enough to hurt her feet or actually splat herself, grinding her beak, chewing her tongue (Shiver and Big Man gently smack her when they see her doing it), scratching at her tentacles
Big Man - Helpful stims - wiggling, dancing, humming, singing, smacking his tail on the ground
Big Man - Hurtful stims - he doesn't seem to have any....