Lizard - from the Spiderman 3 series, much kudos to Hasbro for finally releasing a great 5" scale Lizard. The previous animated series Lizard was too simple and the one from the Web Force series was too big, being more of a 6" scale.
Tarantula - other than the weird arm pose, this is an excellent figure from the Toybiz Spiderman Spider Force series
Vermin - was part of a cancelled Spiderman Street Force series, luckily he resurfaced as part of the Marvel's Dark Side set. Excellent sculpt and detailed paintjob. Has a sewer manhole throwing action.
Stegron - from the Vault series, came with restraining gear, beautiful sculpt!