I was recently browsing this site, and found some nice info on some of the more obscure TF material - chiefly the goofy books. Probably the single funniest of these (unintentionally of course) is Decepticon Patrol. Check out Prime and the Not-Autobots.
In fairness, Not-Mirage actually has a cool looking robot mode. The modified Seekers aren't too bad either. This book also has a great ending:
Revenge of the Decepticons also has an amusing Almost-Huffer, who seems to be missing something.

Optimus flings Starscream and Megatron into orbit. Really.
Revenge of the Decepticons also has an amusing Almost-Huffer, who seems to be missing something.