You know, I rewatched 'Meet the Robinsons' recently, and the family dynamics are actually way more intricate than I remembered at first glance. Wilbur definitely stands out as the main kid character, but the Robinson household is packed with so many quirky relatives that it's easy to miss details about his immediate family. From what I caught, Wilbur's parents, Cornelius and Franny, don't mention other children, and the film focuses heavily on his journey as an only child inventor. The chaos of the time-travel plot overshadows any sibling subplot—honestly, the whole clan feels like one big extended family anyway, with uncles, aunts, and even a talking bowler hat stealing the spotlight.
That said, the lack of siblings makes Wilbur's bond with Lewis more poignant. Their friendship fills that gap in a way, especially with Wilbur mentoring Lewis like an unofficial big brother. The movie's theme about creating your own family ties might explain why biological siblings aren't part of the story. It's all about chosen connections, from the robot butler to the T-rex with a tiny arms complex. The absence of siblings never felt like a hole to me—just room for more eccentric adoptive relatives.