Dragon's Eye is a marble used by Martin Prince while playing with other kids.
Martin and other boys played with their marbles at Springfield Elementary. Martin was talking too much, so Nelson punched him and Dragon's Eye rolled away to a mysterious figure in the shadow of a large oak tree. The figure ducked and threw Dragon's Eye away, revealing himself as Milhouse.
- It is a parody of Dragon Ball, a manga and anime created by Akira Toriyama.