El Matadora, alias Keikai-Dora, operates as a dual-identity hero within The Doraemons—a collective of telecard-linked robots. By day, he masquerades as a 17th-century Spanish dishwasher and waiter at a Gyūdon restaurant, enduring the owner’s reprimands for dish-shattering mishaps caused by his unruly ox horns, which replace typical cat ears. These horns, paired with his unmatched strength, lead to chaotic accidents, from toppled patrons to Robolympics disqualifications for rule-breaking feats like hurling bulls.

As Keikai-Dora, he dons a Magic Cloak to deflect bullets and unleash gusts against foes, leaving his mark by slicing adversaries’ pants or etching his stylized “D” crest into their attire. His bravado shifts to chivalry around women: he greets them with a rose clenched between his teeth, addressing them as “señorita,” as demonstrated during collaborations with Dorami on Robot School cases. Though fiercely competitive with Wang Dora, their rivalry tempers into mutual respect amid heated debates.

Juggling heroics with menial tasks, El Matadora battles erratic napping spells and dreams of matador glory, his moniker blending “Dora” with the bullfighting tradition. His quirks extend to a taste for dorayaki drenched in spaghetti sauce and a covert bond with Carmen, the restaurateur’s daughter, who knows his secret and anchors his personal life. During missions—like investigating student disappearances—his brute force and tactical flair prove pivotal, cementing his role as both a localized guardian and an unconventional ally.