One of the universals across pretty much all Transformers continuities has been the use of Faction Symbols to differentiate members of respective factions, and sometimes even sub-factions within armies.
Generation 1
- Unicron
- Quintesson
- Ancient (Dreamwave)
- Ancient Autobot
- Anciant Decepticon
- Autobot
- Decepticon
- Optimus
- Malignus
- EDC
- Wreckers
G.I. Joe Crossovers
- Cobra
- G.I. Joe
- Decepticon/Cobra
Generation 2
- Seibertron Federation
- Autobot (G2)
- Decepticon (G2)
- Cybertronian
Beast Era
- Maximal
- Predacon
- Seacon Space Pirate
- Blendtron
- Combatron
- Beast Machines Maximal
- Vehicon
- Dinobot
- Mutant
- Transtech Autobot
- Transtech Decepticon
Unicron Trilogy
- Mini-Con
- Unicronian
- Autobot (Cybertron Defense)
- Team Ironhide
Others
- 1st Transformer
- Go-bots Autobot
- Go-Bots "G"