Looks:

Dark green scales and mint-green glowy scales (?). Turtle has Emerald green eyes and when his scales glow they turn a bright neon green. When using animus magic, his talons glow slightly green.

Sexuality:

I headcanon Turtle to be Asexual. He feels no sexual attraction to anyone ever.

Voice:

Blu / Rio

Other Headcanons:

Turtle befriended a dolphin while he was a dragonet, and though his brothers teased him about it, Turtle still kept meeting with the dolphin.

He is scared of sharks