Origin

Dave

One night he decided to put on a costume. He spent the first few weeks walking around on rooftops getting used to the costume and enjoying the thrill of wearing it underneath his clothes. He spent time working out in his high school gym during lunch and also ate high protein foods to try and pack on lean muscle all the while trying to come up with a name.

"The Greatest Superhero of All Time"

Kick-Ass

The thugs rushed off and Dave struggled to walk home. Crossing the road, he ends up getting hit by a car and became a victim of a hit and run as the ones responsible fled the area. He was left with two broken legs and a crushed spine yet in his horrendous state he was able to take off his costume and hide it before the paramedics arrived.

After months of counseling and therapy, Dave burns all of his comic books and promised himself to never partake in heroics ever again. A promise he immediately broke.

In his regular life he gains the confidence and even gets the courage to talk to the hottest girl in school and she reciprocates. By now Dave is on cloud nine only to be brought down by his best friend Toddy Haynes when he tells him that every one thinks he is gay because he was found naked those months ago when he first donned the costume. Being the opportunist Dave played the role of the supposed "gay best friend" just so he could be close to the girl that he had a crush on. He also received a can of mace from his father he showed concern from all of Dave's new cuts and bruises.

Hit-Girl and Big Daddy

As Kick-Ass he sets up a myspace page to come into contact with victims or people who need his assistance. On his first mission he went to a hotel building looking to deal with a man named Eddie Lomas. The call came from Eddie ex girlfriend saying that he was making crank calls to her and she asked Kick-Ass to go have a little "talk" with him. After a few condescending jokes about Dave costume made by Eddie and his crew, a fight break's out between Kick-ass and Lomas's posse. He used the can of mace that his father gave him on Eddie but was quickly stuck from behind. It looked evident that Kick-Ass was about to be severely beaten again we suddenly a mysterious young girl in costume carrying a katana sword appears. She uses the sword first on Eddie driving it through his back. Then she uses it on one of the crew members, cutting half of his head off. With 2 men now dead she makes an open challenge to the rest of the people in the room as she began to pull out a second katana sword.

Unlike Dave, the young girl was well trained and ruthless in her form of justice. He watched as she one by one killed the people in the room thinking "she handled those knives like a f***ing surgeon. When it was over she assured him that they were on the same side and took off so that cops would not find her at the scene. Kick-Ass followed only to see her go to a large costumed man. Through their interaction Kick-Ass found out that the girl's name was Hit-Girl and the man was known as Big Daddy. As they fled Kick-Ass was impressed at how they carried themselves and the tactics they used and called them "the real deal"

The murder of the people in the Lomas house made Dave extremely uneasy. Thinking that it could all be pinned back to him he vowed to never  again put on  the costume again in fear of going to jail. His meeting with Hit-Girl and Big Daddy left him wondering and he began to search the internet were he had become popular but could find nothing on them. After a conversation with Eddie Lomas's ex girlfriend Dave feels more comfortable about his name staying clear but still is convinced that he will never become Kick-Ass again.