You're a snake-human like mutant, with a splited tongue, some piercings and mostly Punk clothes, your skin is covered with scales in some places like the side of your waist, neck, upper arms or thighs.

you were thrift shopping in the middle of the night when you notice a turtle like mutant lingering in the corner, watching you, the moment he realized, he was about to run off again but you were faster, placing yourself in front of him

"Well, hello." Raph growled, knowing he's been caught