I'm wondering if there is any way for a character to get the Huge size catagory, and if so, how?
Summoner (Synthesist) gets the Huge evolution at a certain level; or he can just get the Large evolution and hit himself with Enlarge Person.
If the Harrow Deck of Many Things exists in the campaign the Mountain card permanently increases a person by one size category. (Interestingly, that can mean they could get stuck in the room they drew the card in.) That's an extremely unreliable way to grow in size, though.
Issues with damage aside (and you could stack a LOT of dice if you build the character for it and used the right spells), the problem that jumps to my mind is 'how is this character going to fit in a dungeon?' You're either going to have to have shrink person as a special ability, or every dungeon you come across will just happen to be built extra large.
Personally, I try to avoid creating a character that the GM is going to have to pander to in order to make shine. Playing a gnome lawyer in a campaign with no political intrigue would be inappropriate, for example. In this case, the GM is going to have to give you a way to shrink down, or modify every dungeon the party encounters.
polymorph/beastshape/wildshape?
An 8th level Druid can turn into a Huge Animal, getting sick damage dices, especially when coupled with Strong Jaw.
At 12th into a Huge elemental.
