Question: What did the illustrator of a well-known manga starring Goku first achieve mainstream recognition for?
Sentence (from "Akira Toriyama"): He first achieved mainstream recognition for his highly successful manga "Dr. Slump", before going on to create "Dragon Ball"—his best-known work—and acting as a character designer for several popular video games such as the "Dragon Quest" series, "Blue Dragon" and "Chrono Trigger".
Relevant evidence: Yes