Melinda Move Master Swingtail is a character in Tanglevine Jungle. She can be found near the ruins after you go across the river. You need to have the levitation power to reach her.
She offers to teach you moves if you find her Mystical Move Scrolls. These can be won from playing games in Tanglevine Jungle and are also hidden inside Magical Secret Envelopes).
There is a Game Machine next to her where you can play games of Bounce, Word Race and Flash Cards.