Your search for "D/D Cerberus SDPD-EN007" revealed the following:
D/D Cerberus - SDPD-EN007 - Common - 1st Edition from Structure Deck: Pendulum Domination 1st Edition, available at 401 Games Canada. Rarity: Common Card Text:Pendulum Effect: Once per turn: You can target 1 "D/D" monster you control; change its Level...
D Cubed - DESO-EN007 - Secret Rare - 1st Edition from Destiny Soldiers 1st Edition, available at 401 Games Canada. Rarity: Secret Rare Card Text:If this card is Normal Summoned: It is also treated as a "Destiny HERO" monster while...