Mark (Mario Tennis series)
From the Super Mario Wiki
In Mario Tennis, Mark's hair is a deep shade of red, and he wears red colored tennis gear and purple sneakers. He is on the tennis varsity team, and in doubles, the player has to face him and Bob to get in the Island Open. Once beaten, he can be used as an All-Around character.
In Mario Tennis: Power Tour, he is the coach of the Junior class at the Royal Tennis Academy. His design appears to be the same as his Mario Tennis appearance.
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