Senbei Norimaki, known as Dr. Slump, is a 28-year-old inventor in Penguin Village renowned for creating Arale Norimaki, a superhumanly strong yet naive robot girl designed as a "perfect humanoid robot." His genius intellect clashes with comedic flaws, including lecherous impulses and a tendency to envision himself as a taller, more dashing figure when striving for seriousness. His inventions frequently spiral into chaos, exemplified by Gatchan—a cherubic creature from a prehistoric egg later revealed as an angelic observer of humanity.

Senbei’s romantic pursuits center on Midori Yamabuki, Arale’s teacher, whom he initially idolizes before impulsively proposing amid misunderstandings. Their marriage results in the birth of their son, Turbo, conceived despite Senbei’s farcical misunderstanding of human reproduction. Beyond his core series, he crosses into *Dragon Ball* lore, repairing Son Goku’s Dragon Radar, underscoring his broader narrative ties.

In *Dr. Slump & Arale-chan Ncha! Penguin Mura yori Ai o Komete*, Senbei accepts a royal mandate from Yapaya Kingdom to build a laughter-inducing robot for their princess, echoing his recurring role as a solver of absurd dilemmas. His creations balance lunacy and brilliance, such as the "Reality Machine," which warps environments using images, epitomizing his erratic scientific mastery.

Interactions with Arale and Penguin Village residents highlight his dual identity as both chaotic instigator and devoted guardian. Rivalries like that with Dr. Mashirito—a parody of his real-world editor—layer meta-humor into his arc. Despite his bumbling traits, unwavering loyalty to family and inventive passion anchor his character across all media, cementing his legacy as a cornerstone of the series’ universe.