Predacons

Transformers G1 Predacon combiner team:
Razorclaw
Rampage
Tantrum
Divebomb
Headstrong
Predaking

Beast Wars Predacons (in order of joining)
Megatron
Dinobot (defected to the Maximals)
Terrorsaur
Waspinator
Tarantulas
Scorponok
Blackarachnia (defects to Maximals)
Clone-1 (non-transforming clone of Dinobot, it only had a beast mode)
Inferno
Quickstrike
Silverbolt (defects to Maximals)
Rampage
Ravage
Dinobot II (turns good in the end)
(Notes: With the exceptions of Megatron, Blackarachnia, Silverbolt, and Waspinator, all the other Predacons who appeared in Beast Wars died. Additional Predacons are: Starscream who possessed Waspinator's body, Rhinox who was once reprogrammed into a Predacon and Rattrap who seemingly defected into the Predacons in order to spy on them as well, but none of the three were true Predacons in this series)

Beast Wars II Predacons:
Galvatron
Megastorm
Starscream
BB
Thrust
Dirge
Autorollers (Autostinger, Autocrasher, Autojetter, Autolauncher)
Majin Zarak (movie only)

Beast Wars Neo Predacons:
Magmatron
Saberback
Guiledart
Dead End
Crazybolt
Sling
Hardhead

Robots in Disguise Predacons:
Megatron 2
Dark Scream
Gas Skunk
Slapper
Sky-Byte

Prime Predacons:
Airachnid