Most Complicated Transformation ( excluding MPs )

[Pascal]

Trans-Scanning Prime a bitch to transform to truck mode.

[S.A.A.M.]

Unicron used to piss me off. I remember when I first took him out of the box, I decided I was going to watch the TF animated movie while transforming him.

After removing the twist ties and finally transfoming him, the movie had finished about an hour prior.

[astrana]

i heard the classic ironhide and galvatron are pain
guess i will have to wait and see for myself

[tusko]

The paneling on the Star Wars Death star is fiddly.

[FatCat]

Alternators Grimlock was a pain in the arse.

[Hound]

Originally Posted by FatCat

Alternators Grimlock was a pain in the arse.

If you're referring to getting his head into the hood, I certainly agree. I must have been working on it for nearly ten minutes when, after declaring it physically impossible, it mysteriously and suddenly slid in.