delinquent youths are the group of the hooligan beasts which is taking over a parts of makai corporations, and they`re the main villains of the 3rd series.
to be added
Ikarikiller : a squid like monster he has two metal claws on his hand
Kuwugaknuckles : a stag beetle like monster he has two swords on his hands
Bullhead : a bull like monster he carries a flag
Mad jark : he looks like a saw shark he has two knife on his hand
Bashirijet : he resembles a Rhinoceros hornbill he carry two weights