HOTW- Prince Planet

 

Prince Planet (Popi) is a member of the Universal Peace Corps, originally from the planet Radion (Clifton), coming to Earth on a mission to determine if this world meets standards for membership in the Galactic Union of Worlds and assist its inhabitants during his stay. While on his mission, Prince Planet adopts the identity of an Earth boy named Bobby.  He is befriended by the Worthys, Diana and her father Pop.  He later makes makes friends with Aji Baba the wizard, and Dan Dynamo, the top wrestler in the world.  They battle evil in the form of the Martian wizard Warlock, and then Krag of Kragmire.  There are many other villains to fight as well.

This is one of the few Japanese cartoons I remember from my very young childhood.  Mostly I remembered the pendant, which possibly explains my love of them. I didn't remember too much about it, since it was rare even back then, there was was scant information to be had.  Great show, though.  The Metalizer is very similar to Green Lantern's ring.