Mom Racer, wife of Pops Racer and mother to Rex, Speed, and Spritle, dedicates herself to managing household affairs and offering steadfast emotional support to her family. As a traditional homemaker, she contrasts with more independent figures like Trixie. Her pragmatic nature surfaces through suggestions for projects like remodeling the kitchen or rebuilding the garage, often aimed at channeling Pops’ energy after his job departure. Her background receives minimal exploration in official media, which avoids her direct participation in racing narratives. Scenes frequently depict her knitting or handling domestic tasks, underscoring her stabilizing influence. Interactions with family blend warmth and playful teasing, particularly toward Pops, while she encourages her children’s independence through hands-on learning. In the 1997 *Speed Racer X* reboot, she remains a supportive figure under the name Misuzu Hibiki in the Japanese version, reflecting the family’s revised surname. Spin-offs and films maintain her focus on reinforcing familial unity over individual growth. Brief mentions of her preference for white roses and flashes of dry humor punctuate interactions, though these elements stay secondary to overarching storylines.