Devack

"It The Muitl-Colored Card But It Can't Be"

Devack is one of the Dark Signers who defeat Light Monk in duel and also as that He would able to face Manny in combat and but that time Devack was sent by Darkspella to take the Shard of Kaijudoa as her source to rule the Veil and during his duel with Manny in Cards combat, He's sees Master Yangchan in spirit form who gave Manny the Muitl-colored creature card to defeat him

and even also Devack have the Light and Darkness civilizations cards to duel Manny and also as that He was able to stop Manny's new creature Blade Seer that Master Yangchan gave him to finish him off with no Shield left for him by unable to stop Manny's Blade Seer and lost the duel with him in combat