Fing Fang Foom,Master Mold,Magus,Shuma Gorath(He could be just large but that goes from personal opinion)
recently i have been looking into transformers stuff to draw Master Mold to fit in game and started to think what i would do to others
Master Mold is a Set size,his just a Hulk Sentinel,you don't need to make him taller than Sentinel you just need to make him larger
But characters like Fing Fan Foom who are know for ther colossal size but can become smaller,i remembered a fun facts video about MCOC that Apocalypse changes his size as his charge ramp up


not huge difference but you can see where i'm going, Cassie also has this but i think it's a bug they already fixed
Is not what some of us would like since they are doing new stuff but is what i believe that is more practical
They don't need to be giga giants,changing from Hulk to a bit above Sentinel size could be a good beginning for future stuff