A couple of sketches I did while waiting in line for Transformers: Dark of the Moon... Blame

for most of these.
1: Completely non-canonical concept drawing of Parvulus Prime, one of the Original Thirteen Primes. He is the youngest and most impressionable of the Primes, but quite possibly the bravest. He is a strong idealist, and idolizes his elder brethren. Parvulus means child, young, or small in latin; thus, he is the representative Prime for the ever-present "kid appeal" character.
2: Given the art prompt, "Goldbug takes Grimlock (dinomode) out for a walk," this was the result.
3: This time, the art prompt was "Jetskibot". I decided to take it and give things a femme twist, and figured she might just be light enough to use her jets to 'run' on water...
4: An art prompt of "Taco Prime." Yes, he turns into a taco cart. Yes, he's wearing a sombrero. Yes, he has a giant mustache. Yes, I know it uses/abuses negative racial stereotypes. Yes, I did it anyway...
[link]
The rest of these are great too