This page lists Rare-tier units in Ultimate Tower Defense.
- Beast Boy
- Black Spidey
- Blue Hulk
- Broccoli
- Captain Marvel
- Christmas Fluffy
- Cyborg
- Cyborg (Common)
- Cyclops
- Deadshot
- Death Kid
- Dori
- Dr. Strange
- Fluffy
- Gen
- Gravity Gal
- Gukoo
- Hulk
- Human Torch
- Invisible Woman
- Iron Spider
- Isak
- Itchi
- Johnny Jester
- Julia
- Ken
- Keroto
- Kid Arachnid
- Killer
- Kingpin
- Kokubu
- Lennon
- Minus
- Missy
- Mister Fantastic
- Monster Cat
- Raruto
- Raven
- Reverse Flash
- Sabre
- Scarlet Spider
- She Hulk
- Speed Wagon
- Star Fire
- Star Mercury
- Supergirl
- Teen Robin
- The Thing
- Vision
- Wolverine Origins
- X-plosion Fury
- Young Joseph
- Young Lad
- Zid