U
Ultra
Ultracricket
ULTRON
UNIBART
Union of Xyon
UNIT
Universal Calandar
Universal Concord of Economic Cooperation
Universal Phenomena
Universal Song Contest
Universe A
Universe B
Universe G
Universe H
Universe N
Universe R
Universe V
Universe W
Unmapped Stars
Unos
UOX Quadrant 7
USO
Utopia Station