Various summoned or controlled creatures, such as constructs, undead or elementals (see myrmidons), depending on the wizard’s preference or specialty.

That puts big fancy things like resurrection well out of reach then. Probably some basic martial abilities, with a bit of healing and buffing.

And the super weight scale? Do characters start at iron weight and end at super/hyper weight, or is it different scaling?

What kind of world tech level and range of super weight are you looking at for this?