He-Man and the Masters of the Universe (1983)

S02E35 Search for the Past

While exploring, Man-at-Arms discovers a royal ornament that may have once belonged to King Miro, the long-missing father of King Randor. Determined to uncover the truth, Randor teams up with He-Man and Man-at-Arms for an adventurous quest into the Swamps of Enchantment to find his father.