Megareus whose exploits seem to coincide with those of Melanion. He was also one of the suitors of Atalanta and won the race against her by decoying her (he rolled three apples that Aphrodite had thoughtfully given him off the course and Atalanta felt obliged to stop and pick them up).
His propitious name means 'horse force', from hippos, 'horse' and menos, 'force', 'might'. Perhaps this favourable name helped him to win. (Of course, one can also read erotic overtones into the name.)