Yeah, Remuthra's character will be carrying his wingman around on his back. THIS CANNOT GO WRONG.
It's the evolution of a previous idea I had to make a character who could throw other characters around.
Been there, done that. In one game the parties knight (lawful fighter class) carried the halfling rogue on his back. The halfling had set him self up to be able to use wands like mad, fire ball and chain lightning spam is much stronger than just about any archer. This concept was later reused in a future campaign with the fighter becoming a half-iron golem when he had his arm replaced so he now healed from fire so the halfling warlock chained his fire attack through the fighter first when ever he was hurt.
Best character to throw other's around is giant, what with their size and bonus to throwing. I was a monk vampire with a adamantium reinforced mithril coffin with a special spring release catch. He would chuck my coffin over the enemy and I would spring out on-top of them.
But on the campaign, let's stick with neutral to good party set up. Avoid monstrous races (there is going to probably be specisim, rather avoid having most of the party being left out of going to where they need to go). Also lets try and stick with the main Pathfinder book and the Advanced player's guide.
Give me the rest of the day and I'll have more info.