A walker, in the most basic form, is a mobility aid that helps individuals maintain stability while moving. A rollator is a more advanced type of walker, typically equipped with wheels, a seat, and handbrakes. This combination of features makes rollators particularly beneficial for people who require assistance to walk but still wish to maintain an active lifestyle.

The inclusion of characters with wheelchairs in Happy Wheels serves a larger purpose beyond mere entertainment. It highlights the idea that mobility challenges can be met with resilience and creativity. The game's absurd scenarios allow players to engage with the concept of disability in a light-hearted manner, presenting an opportunity for dialogue about real-world issues. While some may argue that the game trivializes disability, others see it as an avenue to confront societal perceptions of mobility and independence.