got from top left...
Destroyer! They can bank their actions into free actions next turn. Which means, if you let them live, they'll slap your shit for 3 attacks!
Light Cruiser! Dodges the first time they'd be affected by anything, and can throw up an interdiction field to fish for opportunity attacks!
Battleship! They can root themselves to extend their range, then they can throw High Die shots at you. and if you get close they can rip your ass apart with a machine-cannon!