A size comparison of all Autobots created by Hasbros (with some of my redesigns) as well as Autobots created by me. The list includes:

Optimus Prime - G1 style
Optimus Prime - my modernized version with some aspects from the movie verse and Prime
Bumblebee - classics with some aspects from Animated and my personal touch
Goldbug - similar to Bumblebee with some mods
Cliffjumper - G1
Ironhide - G1 with some aspects from the Movie verse and Animated
Ratchet - G1 with some aspects from Animated and WFC
Jazz - G1
Windcharger - G1
Bluestreak - G1
Prowl - G1
Smokescreen - G1
Hot Rod - G1
Rodimus Prime - G1
Ultra Magnus - G1 with some aspects from Prime
Bulkhead - personal design with some aspect from Prime
Hot Danimus - mine
Danimus Prime - mine
Antronus - mine
Ascoobus - mine
-new additions-
Qyladrive - mine
Tiffspeed - mine

Previous version: http://www.furaffinity.net/view/18498118/
Transformers belong to HASBROS
some of the Autobots belongs to me