In the anime, the "Metal Fiend Token" appears to be made up of connected balls of metal, rather than the creature shown in the card's artwork.
The symbol underneath the statue in this card's Japanese artwork is a Pentacle.
For some odd reason, this card appeared in Yami Marik's hand in the dub (taking the place of his "Bait Doll" which was present in the Japanese) during his Duel with Yami Yugi, even though he was unfamiliar with the card when Yugi played it.
Seto Kaiba said that this was the only card that could defeat The Winged Dragon of Ra. However, Yami Yugi managed to defeat Ra later using Ragnarok.