Shirtless in bed 17

The Flash (Barry Allen)

Gamit (Remy LeBeau)

Invicible (Mark Grayson)

Beast Boy (Garfield Logan)

Romeo and 

Iceman (Bobby Drake)

Red Hood (Jason Todd)

Hulkling (Teddy Altman) and

Wiccan (Billy Kaplan)

Spider-Man (Peter Parker)

Midnigher (Lucas Trent) and

Apollo (Andrew Pulakski)

Yorick Brown

Nightwing (Dick Grayson)

Robin (Tim Drake)

Iron Fist (Danny Rand)

Superboy (Conner Kent/Kon-El)

The Flash (Wally West)

Jimmy Olsen

Danny (from Hit Me)

David Isherwood and

Jericho (Joseph Wilson)

Underwear scenes, 27

William Clockwell in Invincible

Jake Kong Jr. in Filmation's Ghostbusters

Danny Phantom (Danny Fenton) in Danny Phantom

Ron Stoppable in Kim Possible

Avalanche (Lance Alvers) in X-Men: Evolution

Superboy (Conner Kent/Kon-El) in Young Justice

Geo-Force (Brion Markov) in Young Justice

Spider-Man (Peter Parker) in Marvle's Spider-Man

Iron Fist (Danny Rand) in Ultimate Spider-Man

Jimmy Olsen in My Adventures with Superman

Naruto Uzumanki in Naruto

Steve Maryweather in Q-Force

Blue Beetle (Jaime Reyes) in 

Batman: The Brave and the Bold

Underwear 58

Human Torch (Johnny Storm)

Iron Fist (Danny Rand)

Speedy (Roy Harper)

Jake Kong Jr. 

Avalanche (Lance Alvers)

Spider-Man (Peter Parker)

Jimmy Olsen

William Clockwell

Ron Stoppable

Danny Phantom (Danny Fenton)

Superboy (Conner Kent)

Blue Beetle (Jaime Reyes)

Naruto Uzumaki

From Digimon

Underwear 57

Archie Andrews

Ka-Zar (Kevin Plunder)

Cyclops (Scott Summers)

Steel (Hank Heywood)

Unnamed brother of Colossal Boy

Jimmy Olsen

Korak, son of Tarzan

Cannonball (Sam Guthrie)

Cypher (Doug Ramsey)

Zero-G (Alex Power)

Green Lantern (Guy Gardner)

Batman (Bruce Wayne)

Mason Macabre

The Flash (Wally West)

Prodigy (David Alleyne)

Northstar (Jean-Paul Beaubier)

Luke Skywalker

Impulse (Bart Allen)

Captain America (Steve Rogers)

Janek "Tank" Sunber