Not sure where we stand on galactus being a playable character, my understanding is that right now it's not pratical because he is rigged below the floor. In reading npcstat 5 million times to create custome arenas i noticed someone with opposite problem, modok.
When I add an entity to the custom maps i have to tell it how "high" to put it, for example, if i want to put the arena statue in stark tower on the same stand that nick fury is on, i have to change pos and orientation. Well, in herostat there is no setting like this, but, there is a line in npcstat, and i don't see a reason why same command wouldn't work for herostat.
here it is.
powerstyle = ps_modok ;
size =90 90 120
skin = 6501
this is not to be confused with scale, but if we move scale down to normal, or to what hulk and colosus are, then i bet it would work. Just might have to change the numbers to fit galactus.
I put the code above and below so if someone wants to try this they know where to put it in the herostat, I would test but got the arena project and can't get my brain to far off-track.
hope this helps.