#4 is that fishbowl-headed master of illusion:
Mysterio (Web of Spider-Man #056)
WHY I WANT TO PLAY HIM EVERY WEEK:
Because the sculpt:
…reminds me so much of this cover:
…the second comic book I ever bought. I LOVE getting into character, taunting opponents about attacking “mere illusions” when I force misses with PC or make Super Senses rolls. I also try to make sure to play his wonderfully campy-yet-creepy theme music* from the Spider-Man 2 PS2 game during his actions.
It doesn’t hurt that his trait is really useful.
I DON’T PLAY HIM EVERY WEEK BECAUSE:
He only has the Sinister Syndicate keyword and he’s a weakling with poor offense. I also like to run him with the earlier versions from the Ultimates set.
I’M PLAYING HIM AGAIN:
On the next Sinister Syndicate team, of course. I think I’ll also try him on a wild card abuse team to get the best use of his Syndicate TA.
* link may not work. 
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#3 is…
Rocket Racer (Web of Spider-Man #044)
WHY I WANT TO PLAY HIM EVERY WEEK:
He’s black, y’all. 😉
Seriously, as a young black teenager coming up, I was always glad to see characters who looked like me, even if they were silly morts like this one. Ever since the 1985 story the above art appeared in, the Racer’s been a favorite, and I was glad to see him in Web of Spider-Man.
(Now bring on Slyde!)
I DON’T PLAY HIM EVERY WEEK BECAUSE:
He’s not very powerful and takes a lot of finesse and wild card abuse to make him worth running. He’s too many points to make workable in low-point games. And I hate to run him only to fail, so I don’t run him unless I’m sure I can make him work.
I’M PLAYING HIM AGAIN:
Probably on the same wild-card abuse team as Mysterio. 
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Be back tomorrow for my top two (or more… ) picks for favorite ‘Clix of 2010!