[@JunkMail] Hmm... This is long... for now I would tone it down a bit on the number of Pokemon. Keep about three or four on you at a time as a member of Royal Skies. Rotom is fine for a partner, just make sure he's in his normal forme most of the time (Unless you want Damian carrying around a Fridge, Washing Machine, etc. all the time). Tyrantrum can stay, and I'll get onto his Mega Forme in a bit. I'll leave it up to you who else you can keep. Personality is fine, but I would change from researcher to Elite. Researcher was intended for the more scientist-like guys. It's the Grunts, Elites, and Admins and stuff that have the super powerful Pokemon.

On to Mega Tyrantrum... Typing I would think is fine. Ability... No. I believe I said in the Mega CS Guidelines "Don't give them a completely overpowered ability." I'm pretty sure being almost immune to to basically all status effects and stat losses is considered overpowered. I can assist a bit with that though.

Ability: Tyrant's Gaze - Decreases the power of the enemy Pokemon (similar to Intimidate), and also gives the chance for an opponent to flinch upon physical contact.

I feel that could suit that more. And keep in mind that this is "Based more on Anime Mechanics than Game Mechanics", meaning that there will be the most minor of game mechanics implemented.