I thought a combine

A rebel

Second, more units
I've seen this suggested a few time but,
command or elite metro cop
i'm not good at telling stats (but would be better than normal cops) so on to abilities
all the normal metro cop stuff but add on:
Rally: adds strength and speed to nearby units
Reinforcements: calls in 5 metro cops (can be both types mixed)
Rebel commando
Abilities
switch weapons: has both AR2 and Shotgun
sneak: a SHORT time of invisibility cant shoot and moves slow (about a 5 to 10 seconds, used to make safe get away or to sneak past turrets an kill the gunners)
smoke grenade/ normal grenade
(maybe) makeshift cover: weak one man cover made of scrap it is a one time use (good to hold ground till reinforcements or to use up its full potential if against uneven odds)
this is all i got now so expect more
