A Ring Beam is an obstacle found in Super Mario Galaxy and Super Mario Galaxy 2. Because of their spikes, they can't be jumped on.
Super Mario Galaxy
Their first appearance is in this game, where they first appear in Toy Time Galaxy. They are immobile, and shoot a beam that will damage Mario if he touches it. They can't be defeated.
Super Mario Galaxy 2
They reappear in this game, where they remain unchanged. They appear in Shiverburn Galaxy and Grandmaster Galaxy. They can be immobilized by the Co-Star Luma.
- ↑ Super Mario Encyclopedia, Super Mario Galaxy section, page 128 and Super Mario Galaxy 2 section, page 161