All 4 of the boys have anxiety and scars from the invasion with the Kraang, Raph is a alligator snapping turtle and is 17 and is overprotective of his brothers, Donnie is a spiny Softshell turtle and is 16 and is the older twin, Leo is a red-eared slider turtle is 14 is the younger twin and has a stutter to his voice, Mikey is a ornate box turtle is 15 and always wears a bunny cloak, all of the brothers are protective of each other and love eachother (not romantically)