[6] Cebulski started his comics career in 1997 editing manga for Central Park Media in New York City, bringing titles such as Record of Lodoss War, Slayers, Plastic Little, Geobreeders, Nadesico, and Kia Asamiya's Dark Angel to U.S.

[7] Cebulski remained with Central Park Media until 2001, after which he worked briefly as freelance editor on books such as Jay Faerber's Noble Causes.

[7][9] In January 2002, he was hired full time as an Associate Editor under Ralph Macchio,[7][6][8] in part because of his fluency in Japanese and his ability to recruit top artists from Japan to work for Marvel.

His work on the Dark Horse Comics books Conan and Hellboy impressed another Marvel editor who, unaware of Yoshida's real identity, asked Cebulski to pitch as well.

[9] Cebulski continued to use the pseudonym for a number of Japanese-themed comic books he wrote for Marvel in 2004 and 2005, including Thor: Son of Asgard, Elektra: The Hand, and several X-Men titles.

[14] Cebulski quit Marvel in 2006 to pursue freelance editing and writing work, including publishing several of his own creator-owned books through Image Comics, like Drain[15] and Wonderlost.

[16] He returned to Marvel within a year as an editor and talent scout, establishing the Talent Management department, in which he oversaw a team of staffers to recruit and manage creators that included Jonathan Hickman, Skottie Young, Adi Granov, Sara Pichelli, Phil Noto, and Steve McNiven.

That year during the August 26 to 28 Asia Pop Comic Convention Manila, Cebulski hosted the inaugural Hall M, a showcase of Marvel content in the fields of gaming, television, and movies.

On November 28, Bleeding Cool broke the story that Marvel determined that Yoshida was a pseudonym of Cebulski's in 2006 after Johnston reported on Gregg Schigiel's podcast.

[12]Cebulski lived in Shanghai for 18 months as part of his duties as Marvel's Vice President of International Business Development & Brand Management.