Madoka Kudō works as a veterinarian at Jono Zoo. She is married to Bariki Kudō and mother to twin sons, Raiga and Kuga. Her cheerful and supportive nature defines her family interactions, though she discourages conflict between her sons. She possesses extensive animal knowledge and often wears animal-themed costumes.

Her dream of becoming a veterinarian began in childhood. Volunteering at Jono Zoo during high school led her to meet Bariki when they collaborated to save an ill pregnant elephant. Madoka's expertise in animal handling proved vital; she precisely operated Bariki's lifting equipment due to her deep understanding of animal behavior, an experience that established their relationship.

Within her family, Madoka maintains trust in Bariki despite his frequent absences for secretive invention work, stemming from direct experience with his helpful creations. She supports her sons, Raiga and Kuga. While not officially informed about their Earth defense activities, her awareness they assist their father on significant missions leads her to offer encouragement without directly acknowledging their secrets.

Madoka's name, written with kanji like 窓香, 窓花, 窓華, or 窓佳, incorporates "window" (窓). Her surname Kudō (駆動) means "driving" or "driving force," aligning with her role as the observant anchor who facilitates connections within her family.