the ultimate transformers crossover

i will make a 4-part crossover series,but i need characters.any ideas.
btw,the alt.modes i want are pokemon,classic marvel guys,godzilla monsters,and odviously vehicles too.
cast so far-
'bot optimus:
'con megatron:
'con polarclaw:
btw,the alt.modes i want are pokemon,classic marvel guys,godzilla monsters,and odviously vehicles too.
cast so far-
'bot optimus:
'con megatron:
'con polarclaw: