Arthur

Arthur Achilles Sigmund Sigurd Georgios Diarmuid Heracles Perseus Alexander (TBA, TBA) is

Plot
He is seen rising up from the lake after swimming for days while getting lost, he then sets up the picnic since he was starving. Then Lanteveldt ties him up much to his confusion.

After getting the ring back after it fell in the river while they were looking for a place to watch the king. Sariphi then present him to Leonhart as a reward for bringing back the ring.