let me see :
enemies :
scoop and leatherneck , they hate each other ( special missions)
red star and heavy duty
beach head and falcon
Cobra Commander and Destro
Duke and Flint
scarlet and clutch: since day 1
scarlet and lady J
zarana and the Baroness
kamakura and storm shadow
metal head and salvo :since MARVEL era
best friends
leatherneck and wet suit ( cartoon)
quick kick and bazooka , airtight
mutt and spirit
scarlet and hawk
big ben and dusty
stalker and snake eyes ( since Nam )
roadblock and rock n roll
red star and big bear
steeler and cover girl
salvo and heavy duty
shockwave and wide scope ( swat team)
lowlight and scoop ( DIC)
dialtone and mainframe
lady J and cover girl
Hawk and Optimus Prime
junkyard and sandstorm
duke and roadblock ( MARVEL )
flint and gung ho
ace and Doc
Duke and Hawk
clutch and rock n roll
stalker , scarlet , zap
dodger and dialtone ( since sonic fighters)
loners: snake eyes , storm shadow , recoil , agent faces , firefly .