[2] Krul moved to Los Angeles in 1996, where he landed the job of production assistant on the TV show Seinfeld.

[3] He subsequently went to work for Michael Turner's company, Aspen MLT, writing their flagship titles Fathom and Soulfire.

[2] In 2008 Krul wrote Past Experience, a Heroes comic book story starring characters from the NBC TV series of the same name.

[2][4] That same year, he wrote the third book in the Joker's Asylum series of one-shots, which featured Poison Ivy.

[13] He left Green Arrow after issue #3 due to time pressures but continued to write Captain Atom.