A space marine would only be able to defeat the hobbits and pokemon out of those.
40k fags thinking space marines are actually worth a shit, lol.
jedi - Rogue Psykers are worse = Librarian field day
a sith - Rogue Psykers are worse = Librarian field day
a pokemon - Depends on the pokemon too much to be worth listing
hobbits - Killed with a flick of the wrist
elves - Boltgun round = Rekt
dwarves - Boltgun round = Rekt
wizards - On par with a Psyker, probably needs a special marine to deal with them
men of the west - lol
Certain pokemon and the odd wizard would be a threat, maybe a jedi but they all have far worse parallels that the Spess Mehrens regularly fight and win against.