Erik is a character featured within The Minish Cap. He is a young boy that attends Funday School. Link is first able to meet Erik after completing the Temple of Droplets, in which Link can then enter Funday School. Unlike his classmate Harrison who eats his lunch fast to assure a longer recess, Erik its his lunch slow and is always one of the last to finish.
Link is able to fuse Green Kinstones at various points in the game with Erik. As it is a Green Kinstone fusion, it is not set to a specific treasure chest, but instead, one of the many possible treasure chests. There is one random Red Kinstone within the game that opens up a location in the Hyrule Castle Garden leading to a Piece of Heart, as well as a random Blue Kinstone that opens up a tree in North Hyrule Field leading to a Fairy Fountain. Erik is one of the many characters in which Link can make these Kinstone fusions with.
Erik has the identical sprite image as Harrison, another one of the students at Funday School. It is possible that the two are identical twins.