NOBODY mentioned Ifrit?! sure, he's not the best of them, but he's been in almost all (if not, all) the final fantasies...SOMEBODY's gotta like him a lot :P also, to clear things up, the FFVII summon is called 'Knights of Round' not 'Knights of THE Round', so when abbreviated it should read 'KoR' ok?

but on this topic, my favourite would probably be bahamut in general, but because everybody's choosing him, i'll go with jumbo cactuar...he was just plain funny (and sorta reminds me of captain falcon ....you know, like, the way he moves?...am i right guys?....guys?....)