You got 6 decent champs.Tigra is actually good but requires insane skill to master,Hood is good.Havok, Mojo, and Red Gobin are good along with Ronin.Your roster is OK, not the worse I have seen though.
-> No one useful apart from Tigra-> Has KingPin, White Mags, Mojo, Rgoblin, Havok right beside tigra.
Hood is good.
God I got tigra for cavalier crystal and except for her there is no one useful.