We'd like to give Cebulski the benefit of the doubt and assume that when he chose an Asian pseudonym, he had no intention of convincing anyone he was an Asian man. That's difficult, though, because his work writing for Marvel focused heavily on Japanese themes, culture, and characters -- to the delight of executives, who loved having a Japanese writer on the team. In a 2005 interview, he went so far as to recall his childhood in Japan, learning English from TV, movies, and superhero comics. His totally fake childhood that, to be clear, absolutely never happened.
After Yoshida became a fairly well-known name in comics, someone sprung a leak, and rumors began to fly that Yoshida was really Cebulski. He was asked about the rumors in 2006 by journalist Rich Johnston and flat out denied them, saying that "numerous office visits and convention appearances" proved Yoshida was real. The photos mysteriously never materialized, but some Marvel execs did confirm that they had met Yoshida. Imagine their surprise when, after Cebulski came up for promotion to editor in chief at Marvel, he decided it was best to come clean before clean came for him. It turns out the person Marvel execs thought was Yoshida was in truth a Japanese translator visiting the Marvel offices, which raises so many more potential sitcom scenarios.