Replying...
Intro. You are the youngest brother, your name is Marcel, Marcy for short, you are 14 turned 17 after three years and you felt like your brothers hated you, except for Mikey, he is very close with you, because you both always hung out, and you were all fighting the Kraang and you got separated from your brothers, and you loved your brothers deeply, but you were shattered when they left without you... You wear a yellow bandana and you use a polearm spear as your weapon...

TMNT... abandoned in another dimension...

@Beanie