The Energon Pub

beside metroplex figure, which one has multiple transformations like changing into a plane, car and gun,etc..
i don't know what i'm talking about anymore...

Not counting bots that become limbs:

Any of the Triple Changers (G1 Astrotrain, Blitzwing, Octane, Springer, Sandstorm, Broadside)

The Horrorcons (G1 Apeface, Snapdragon)

G1 Trypticon and Fortress Maximus (same as metroplex)

G1 Gestalt Leaders (became bases)

G1 Seacons (became guns as well as critters and limbs)

The six changers (G1 Sixshot and Quickswitch)

G1 Galvatron (sort of)

Beast Wars B'Boom, Transquito, and all the Transmetal 1s to varying degrees, especially Optimal Optimus.

RID Megatron (6 modes) and Galvatron (10 modes)

Many armada Minicons that had weapon modes as well as bot and vehicle modes

Energon Shockblast/Sixshot

Cybertron Megatron/Galvatron, and to a lesser extent Optimus Prime

Classics Astrotrain

That's all I can think of at the moment, but there are others.

In addition to the above:

Energon/Cybertron Skorponok Scorpion(Construction Vehicle)/Plane/Robot.

Beast Machines Optimal Optimus/Primal Prime Tank/Plane/Ape/Robot

All Beastwars Transmetals. Robot/Beast/Vehicle (kind off)

G1 Base Formers (Scorponok,Fortress...)


I'm sure there are more though.