I like scifi so these suggestions will be based upon them, also sorry it took me a while for these suggestions, have been having inter
Star wars:
Storm trooper: will have a blaster rifle with medium damage, medium fire rate and range with lowish health
Rebel: will have blaster rifle with more range then storm trooper, with medium damage and medium fire rate with low health
Scout trooper: has a long ranged blaster rifle with heavy damage and long range and low fire rate with low health
Rebel sniper: same as scout trooper
Shadow trooper: blaster rifle medium damage, medium fire rate, but medium health (same as rebel)
Shock trooper: blaster rifle close range, fast fire rate, low damage heavy health(same as rebel)
Rocket rebel: Anti-vehicle (same with storm trooper type units)
AT-AT: heavy damage with splash damage, slow moving, heavy health
Speeder bike: fast, medium damage, medium fire rate
AT-ST: medium speed, medium health(compared to AT-AT) and medium damage(also compared to AT-AT) splash damage(smaller compared to AT-AT)
Halo:
UNSC
Marine: has assault rifle lowish health, medium damage with BR,DMR,and shotgun variants
ODST: has silenced smg, assault rifle, BR, and DMR, variants and shotgun+sniper(isn't silenced)
Spartan: has shield with lowish health, and armor with heavy health, has access to all previously named weapons and spartan laser and rocket launcher
Warthog: fast speed, chaingun with fast fire rate and medium damage, heavy armor(more than spartan)
Covenant:
Grunt low health has plasma pistol or needler
Jackal: has beam rifle or plasma pistol
Brute: heavy health about as much as a spartan has brute plasma rifle or gravity hammer
Brute Chieftain: heavy health (more than brute) has gravity hammer
Elite: has shield with medium health armor with medium health has access to all previously named weapons except brute ones, and covenant carbine and energy sword
Hunter: HEAVY health(if you don't know what this is just google "halo hunter")
Ghost: fast speed, medium damage
Brute chopper: low health, heavy damage, fast
Halo weapons:
low damage: smg(has fast fire rate, close range), brute plasma rifle(fast fire rate, close range), plasma pistol(medium range, single shot)
medium damage: assault rifle(medium range), BR(medium range, 3-round burst), DMR (long range, single shot), neelder(medium range), and covenant carbine (medium range, single shot)
Heavy damage: Shotgun(close range), sniper rifle(long range), beam rifle(long range, covenant sniper), gravity hammer(melee), energy sword(melee)
HEAVY DAMAGE: Hunter