Trivia

On his podcast Bill said when he was younger he was in-love with his best friends Boyfriend and when she was gone they'd make out.

Tom and Bill have a tendency to fall for the same girl so they let her chose between them.

Was voted "most annoying German in 2006" by the viewers of TV network ProSieben (27 December 2006).

His mother is a freelance tailor.

He is 10 minutes younger than twin brother, Tom Kaulitz.

He had a teddy bear that he would bring to all his concerts.

With twin brother Tom Kaulitz a member of Tokio Hotel.

One of his favorite television programs is Prison Break.

He and his brother, Tom, do not have middle names.

Had to undergo surgery to remove the cyst in one of his vocal chords. (March 2008).

Trilingual: German, English, and French.

His parents divorced when he and his brother were 7 years old.

Translated all his German songs to English for his band's English album.

Is best friends with his twin brother.

He's afraid that one day him and Tom will get into a huge fight and never speak again.

Was a candidate in the first season of Star Search (2003) (category "Junior"). But in the quarter-final he was defeated by Oliver Bruton.

Likes Gothic fashion.

He hates potatoes, Chocolate, and Broccoli. Once he ate plate of broccoli and threw up.

He didn't like when fans would dress like him or copy him.

Bill wrote his first song about his mouse that died. The song was called 'Traurig' which means sad.

His grandma called him 'Macky' because he ate so much McDonald's.

He was voted #11 in GQ Germanys Best Dressed list in October 2009.

His step-father owns a music school called, "Rock's cool".

Favorite musicians are Nena, Green Day, Coldplay, Keane and Placebo.

His first concert he ever attended was Nena.

His good friend is Andreas, who is also the president of Tokio Hotel's fan club.