Following a leak earlier this week, Nintendo officially revealed Mega Slowbro in Pokemon Omega Ruby and Alpha Sapphire at the 2014 Pokemon World Championships.
Here is his official description:
Slowbro is a Water- and Psychic-type Pokemon and one of two evolved forms of Slowpoke, the other being Slowking. When Slowbro Mega Evolves into Mega Slowbro, its energy gathers in the Shellder clamped onto its tail. As a result, the hardness of its shell is boosted, making its armor incredibly strong. In battle, Mega Slowbro balances on its tail, wearing Shellder as an impenetrable armor over its body.
Mega Slowbro has the Shell Armor Ability, meaning opponents can never land a critical hit, making Mega Slowbro a defensive threat in battle. Its Defense and Sp. Attack also increase, making it a great teammate for long battles requiring high endurance.
If you missed it, Mega Audino was also revealed this week.
Watch the Mega Slowbro trailer below. View some screenshots at the gallery.