There was a comprehensive of Transformers display by Transmy at the Malaysia International Toy Fair. They definitely impressed me with their wide collection of the toys from the 80s until the recent one.
Here are the combiners from the G1 era, Predaking, Menasor and Abominus. They are all the fusions of all five individual robot from particular group such as Predacons, Stunticons and Terrorcons. I notice Bruticus (Combaticons) was not among the crowd.
Stunticons will make their appearance in the next Transformers movie and all of them will combine to form Menasor. It will be also an interesting duel between the Stunticons leader, Motormaster with Optimus Prime.
The Fortress Maximus towered above the rest of the Autobots. Even the combiners look tiny.
This is Trypticon, a giant dinosaur which transform to a Decepticon base is a long time nemesis to Metroplex. I really wish I had one of this.
I can see Hot Rodimus, Perceptor, Ultra Magnus and Six Shot. Six Shot can transforms to 6 alternate modes and not many Transformers can achieve that.
The Dinobots with their leader, Grimlock. By the way, the Dinobots are not very bright Autobots.
This is another classic Transformers. These trio can combine to form a camera, mainly used in Decepticon's espionage mission.
Quintesson on the top left which is responsible for creating both the Autobots and Decepticons according to the G1 stroy line.
The reissue version of both Mirage and Shockwave. Shockwave will features in Transformers 3 as the main villain.
2 giant planet Transformers, the fearsome Unicron and his half brother, Primus of Planet Cybertron
Beast Wars Transformers which feature Optimus Primal, Megatron and Silverbolt.