Top 5 characters.

[Red]

1. Spider-Man
2. Batman.
3. Lex Luthor
4. The Joker
5. Deadpool
6. Wolverine
7. Cyclops
8. The Flash
9. Captain America
10. Superman.

 

[The Riddler]

1. Spider-Man / Batman
2. The Riddler
3. Wolverine
4. Green Goblin
5. Flash

 

[supermarvelman]

Marvel

Hulk
Juggernaut
Sentry
Mimic
Ironman

DC

Captain Marvel
Green Lantern (Guy Gardener)
Bizarro
Krypto
Superman

 

[bcd90]

10. Deadpool

9. Spiderman

8. Psylocke

7. Elektra

6. Thor

5. Storm

4. Venom

3. Emma Frost

2. Domino

1. Pheonix/Jean Grey

 

[Gamma Burst]

1.Hulk
2.Spider-Man
3.Daredevil
4.Silver Surfer
5.Wolverine

 

[Slim31]

1. Magneto
2. Incredible Hulk
3. Jean Grey
4. Spider-Man
5. Emma Frost

 

[Batman]

1. Batman
2. Spider-Man
3. Superman
4. The Joker
5. Daredevil

 

[Toby_Temple]

Here's my list:
1) HULK
2) SPIDERMAN
3) WOLVERINE
4) SILVER SURFER
5) THOR

 

[GNR]

Captain America
Iron Man
Hercules
Hulk
Mr Fantastic

 

[Lord]

Edit: Wrong thread

 

[Spider-Aziz]

This is in the Marvel Comics section, I will answer based on the section:

1. Spider-Man (Peter Parker)
2. Rick Jones
3. Mary Jane Watson Parker
4. Iron Man (Anthony Edward Stark)
5. Jim Rhodes/War Machine

 

[CTFFFan]

1 Spiderman
2 Human Torch
3 The Thing
4 Captain America
5 Mr. Fantastic
6. Invisible Woman
7. Hulk
8. Iron Man
9. Thor
10. Wolverine

 

[MMMMM...Pancakes]

MARVEL
1. Daredevil
2. Captain America
3. Thor
4. Hawkeye
5. Deadpool

The rest of the list always changes, but the top 5 is consistent.

 

[venom892]

1.Spider-man
2.Moon Knight
3.Venom
4.Wolverine
5.Batman
6.Green latern{Hal Jordan}
7.Magneto
8.Nightcrawler
9.Daredevil
10.tie-Green arrow,Hulk,Punisher

Honorable mentions-Captain America,Iron Man,Dr.Doom,Joker

Funny to see this almost a decade later. Here is the list currently.

1.Spider-Man
2.Moon Knight
3.Deadpool
4.Batman
5.The Joker
6.Venom
7.Daredevil
8 Psylocke
9.Magneto
10.Yorick Brown

 

[jonathancrane]

Per Marvel:

1. Wolverine
2. Captain America
3. Black Widow
4. Cyclops
5. Wasp

 

[MessiahDecoy123]

1) Spider-man
2) Gambit
3) Captain America
4) Nightcrawler
5) Silver Surfer/Dr. Strange

 

[Spider-Vader]

1. Deadpool
2. Spider-Man
3. Captain America
4. Hawkeye
5. Wolverine
6. Iron Man
7. Dr. Doom
8. Black Panther
9. Captain Marvel (Carol)
10. Nova (Richie)

 

[TheCorpulent1]

Marvel only:

1. Thor
2. Captain America
3. The Black Knight
4. She-Hulk
5. The Vision

 

[AvengerPA]

1. Silver Surfer
2. Scarlet Witch
3. Thor
4. Black Widow
5. Spider-Man