The Giant King The New Adventures of Robin Hood : Season 3 Episode 4

Ferris, the son of Lord Glister, who is an old friend of Robin's, is mortally ill. They seek out Jarnsaxa, the last of Femorians, the giants of Ireland, whose breath has the power to heal him. When he is returned to health, he becomes a tyrant. Robin and Jarnsaxa decide to make good their error.