Medarotter
From Medapedia
A Medarotter (Japanese: メダロッター), known in English as a Medafighter, is a person who owns a Medarot.
Although most Medarotters train their Medarot(s) for fighting in Robottles, others command their Medarots for other purposes such as work, or simply keep them as companions. Medarotters issue commands to their Medarots using a Medarotch.