• Ulik

• Ulluxy'l Kwan Tae Syn

• Ultima

• Ultimator

• Ultimo

• Ultimus

• Ultrana

• Ultron

• Ulysses Dragonblood

• U-Man

• Umar the Unrelenting

• Un-Being

• Unceglia

• Underlings

• Unicorn I

• Unicorn III

• Unnthinnk

• Unus the Untouchable

• Unuscione

• Urg

• Uriah the Faithful

• Uroc the Unstoppable

• Urthona

• Ushas

• U'Sr'pr

• Ute

• Utgard-Loki