Tiberium creatures are the most powerful (and expensive) Forgotten units. They have a few innate abilities that give them an edge over ordinary units:

1. All tiberium creatures are able to heal themselves on tiberium fields. The Tiberian Fiends are able to blend in with the tiberium, allowing them to ambush enemy units.

2. They can detect any nearby stealthed units and buildings. The Tiberium Flyer can detect stealth even further while it's flying.

3. Since the tiberium creatures are not vehicles, but living things, they are immune to any EMP based weapons and can't be captured by enemy hijackers.

4. The Tiberium Floater can be overloaded to release a powerful EMP blast. The EMP wave loses power the further it travels, and units closer to the floater are disabled for a longer time. The overloading process kills the floater itself. Since all tiberium creatures are immune to EMP effects, using them together with an overloaded floater can give very good results.