As a test subject in the same Weapon X program that had previously given Wolverine his adamantium claws and skeleton, Wade Wilson received a healing factor that prevented his cancer from killing him.Marvel Source
Wade soon escaped the program and became a freelance mercenary using the name Deadpool, working for various criminal organizations. At times he has teamed up with heroes as well, but these attempts at "being a good guy" rarely stick for long.
Wade is mentally unstable, though whether this is a normal state or is caused by his constant state of hyper-regeneration is unknown. One side effect of his mental state is the belief that he is not a real person but actually a character in a comic book.
Strengths: AoE, mobility, healing, armor reduction on boss, good single target damage.
Weaknesses: Spirit use, not a strong support, no CC, no SATB fun
The idea for this build is to stack AoEs (Foot Gougers and Stink Bomb) to clear big groups and use Stink Bomb/Armor Buster for bosses.
BodySlide by One can help get you and/or your team where they need to go quickly and allows you to teleport in, drop FG, and then teleport out of harms way.
The two points to get to Godmode could be put elsewhere - either more healing or pick up lil'Deadpool