My eight-year-old son and myself had a play with Perceptor last night. I don't think he (Perceptor

) is very kid-friendly. The arms/backpack kept swinging out and I think the transformation may be beyond most pre-teenagers.
I found it fiddly to transform and couldn't initially get the backpack to lock in. After my son went to bed I had another go at it and it's locked in now - but I'll be damned if I know how! He now has a little stress mark on the red tabby bit behind his head (the bit that has a slot that the grey piece slides into - man I wish my camera had a macro function...

)
At this moment Perceptor strikes me as a Universe Galvatron - fun to play with in either mode but the actual transformation is a pain.