THE TRANSFORMERS:Hearts of Steel

Ever wondered what form your favorite Transformers would
take if they existed in different eras? Wonder no more, as IDW’s
new Evolutions line will look at some special out-of-continuity
tales involving the Robots in Disguise. The line makes its debut
in June with the four-part Hearts of Steel. In this standalone
miniseries, writer Chuck Dixon and Transformers artist supreme
Guido Guidi transplant the ‘bots to the Industrial Revolution,
where a charismatic hammer-man named John Henry discovers
that a steam drill is really an alien robot named Bumblebee.
Before he can process this information, the pair are attacked by
Decepticons disguised as tanks, trains and walking engines. Is this
all part of a larger scheme by Starscream? And if so, will the other
Autobots arrive in time to stop his nefarious plans?

Guidi has taken over for the series' original artist, Ted McKeever.
Keep in mind that the below sketches are just that, and not final
art, but enjoy the characters' initial reimagining, Guidi-style.

http://www.idwpublishing.com/titles/transformers/hos.shtml