Mark was born in California, but his father's work took the family to various places in the U.S., rarely staying anywhere for more than two years.

His parents divorced when he was 14, and Mark went to live with his father, Tex, in Washington D.C.

Mark's musical development began when he was 14.

Before long, Mark began teaching himself to play simple tunes, working out the bass lines of the Descendents songs first.

When Mark was 16, he returned to California, and settled in the town of Ridgecrest near San Diego.

Like Tom, he was also a keen skateboarder.

Mark got his first bass from his dad. He helped him paint the house so his dad bought him a bass.

Mark attended Burroughs High School in Ridgecrest, California.

Mark used to wear eyeliner to school.

Mark had vague ambitions to become a high school English teacher.

By coincidence, Tom was one of the first people that Mark met on his arrival in the new town.

At every Blink show, Mark writes a different message on his speaker with white duct tape. Anything from "Hi Mom!" to "I have no idea where I am". Once he even wrote a message to his girlfriend after they had been fighting over who loved the other more. He wrote "I love you More".

Mark wrote "Going away to college" on valentines day after watching Can't Hardly Wait.

Mark has his nipple pierced.

Mark's hero of all time is none other than Homer J. Simpson.

Mark appeared on-stage nude, at MTV's Castaway Countdown, during the band's performance of What's My Age Again?

Mark appeared on-stage nude, again, at KROQ's 1999 Weenie Roast.

Mark actually hates the taste of beer.

Mark wrote Dammit in just 5 minutes, about a break-up that never actually happened.

It took Mark about 4 minutes to write "Don't Leave Me"

In the chorus to the Party Song Mark is actually singing "Vagina Vagina Vagina".

Mark's father's name is Tex, his mother's name is Carrie, and his younger sister is Anne.

At a show in Boston, Mark took an inflatable sheep, shoved a drum stick up it's ass, and tossed it into the crowd.

Mark thinks Disney Movies kick ass!

When Mark first met Tom, he climbed a street light in front of Tom's house to try to impress him. When he jumped down, he cracked his heels and was on crutches for about 3 weeks. Tom wasn't very impressed.

Mark lives on a dead end street.

Mark met his wife at the set of All The Small Things.

Mark's wedding was 15 minutes long and they went to a sushi bar after it. He also wore sneakers. He said "... it was more comfortable."

During the last day of production for Cheshire Cat, Mark got locked out of the studio and had to smash open a porta-loo with a spade to use the toilet.

While recording "Dammit" he ruined his vocal cords because he had made the mistake of writing it outside of his vocal range. He never really payed a lot of attention to his voice. He never did warm ups and with his constant yelling on stage and smoking he lost his voice. He could not even speak. They had to take a break from recording and didn't actually finish the record (Dude Ranch) till 1997. After this incident, Mark does vocal warm ups all the time and quit smoking!)

Mark loves the movie Star Wars.

Mark's shoe size is size 11.

Mark tatooed his wrists with the names 'Skye' his wife and 'Jack' his son