Who are Spider-Mans Rivals?

Answer 1

Spider- Man has a huge rouge gallery. It ranges from shape- shifters to Crime Kings. Spider- Man's worst enemy was Norman Osborn (the Green Goblin). Osborn killed Spidey's very first girl-friend Gwen Stacy. Shortly after this Osborn died and his son Harry Osborn took over. Harry was Spidey's collage friend.

Otto Octavius (Dr. Octopus) has also caused Spidey a lot of trouble. He has four mechanical arms on his back and uses these to clutch Spidey. Spidey always manages to win by putting web over Doc Ock's glasses.

Eddie Brock (Venom) is probably Spidey's most deadly villain. Probably the most muscular as well! He is one of the only people who know that Spidey is really Peter Parker and strangely enough he considers himself as a protector of innocent.

Other Spidey baddies are the Chameleon, Sandman, Hydro-Man, Rhino, Shocker, Scorpion, Electro, Vulture, Kingpin, Lizard, Kraven the Hunter, Mysterio, Carnage, Hobgoblin, Jackal, Morbius, Morlun etc.
i cant really be bothered typing up every single spiderman villain so here is a link

http://en.wikipedia.org/wiki/List_of_Spider-Man_enemies

it has all of his villains (well at least most of them)
He has many enemies you can find it here:

http://en.wikipedia.org/wiki/List_of_Spider-Man_enemies

Answer 2

green goblin, venom, doctor octopus, carnage, kraven, chameleon, kingpin, Mysterio, Morlun, black cat, tombstone, rhino, tinkerer, hobgoblin , molten man, spider slayers, lizard, jack-o-lantern, jester, vulture, scorpion, sandman, electro, demogoblin and many more!