Character

Ultra the Multi-Alien

1

Ultra-Humanite

1

Ultra-Man

1

UltraForce

2

Ultragirl

1

Ultraman

4

Ultraman (DC)

3

Ultraviolet Corps

1

Ultron

10

Ulysses (DC)

1

Ulysses Bloodstone

7

Ulysses Cain

1

Umar

1

Umbrella Academy

7

Umbrella Man

1

Un-Men

2

Uncanny X-Force

1

Uncle Ben

4

Uncle Creepy

2

Uncle Ernst

1

Uncle Marvel

1

Uncle Sam

6

Uncle Scrooge

23

Undead Monk

1

Underbroker

1

Underdog

1

Undertow

1

Undone, The

2

Undying Ones

1

Uni-Mind

1

Unicorn

1

Unicron

3

Union

1

Union Jack

7

Union, The

2

United

1

United Order

1

Unity Kincaid

1

Universa

1

Universo

1

Unknown Ranger

1

Unknown Soldier

3

Unknown Wizard

1

Unparalleled

1

Unsanity Collective

1

Unspoken

1

Untitled

1

Unus

1

Uovu

1

Updraft

1