Res

Sonic Boom designs. previous ones lol
Blaze has all that sports tape so she can light it on fire and toss it, or she just wears 'em as they're burning to intimidate others. She has to replace them often. Based on one of her prototypes...and she's not the sol princess, she's just a foreigner that came to bygone or something. she's less strict than canon, but still aerophobic and not good with people
Silver's just... well i imagine him to be mature and witty personality-wise plus (reduced) chesthair. timetravelling isn't really his "thing" but he's from the future (like only a few years. he could just go and find his 'present' self at any time but 'that' silver lives somewheres else). Since his powers are from his mind and involve him or objects floating, i don't think he really needs sportstape. He hangs out with blaze because hey i like silvaze, that should be enough >:[
Marine is a marine??  she has a single ponytail in the back

also the more i look at this pic the more mistakes i find myself locating (even though this isn't a 'serious' pic), i am never doodling start to finish in firealpaca ever again