- Twin-Headed Behemoth
- Twin-Headed Thunder Dragon
- Twin-Shield Defender
- Two-Headed King Rex
- Tyr of the Nordic Champions
- Tyrant Dragon
- UFO Turtle
- UFOroid
- UFOroid Fighter
- Ultimate Dart Striker
- Ultimate Tyranno
- Uluru's Guardian
- Underground Arachnid
- Uni-Horned Familiar
- Unibird
- Unicycular
- Unknown Synchron
- Uria, Lord of Searing Flames
- V-Tiger Jet
- Valkyrie Brunhilde
- Valkyrie Dritte
- Valkyrie Erste
- Valkyrie of the Nordic Ascendant
- Valkyrie Zweite