Card Trivia:Evilswarm Ouroboros
- This is the cover card of Hidden Arsenal 7: Knight of Stars, Duelist Set: Version Dark Returner, and Duel Terminal - Ouroboros, Wicked Dragon of Destruction!!, and is one of the cover cards of Legacy of the Valiant: Deluxe Edition and Duelist Set DX: Double Union.
- This monster appears in the artworks of "Focused Aquamirror", "Infestation Terminus", and "Xyz Revenge".
- This is the "lswarm" counterpart of "Trishula, Dragon of the Ice Barrier".
- This card, like "Evilswarm Bahamut" and "Evilswarm Ophion", has 50 ATK more and 50 DEF less than its counterpart.
- Both have effects that affect the opponent's hand, side of the field and Graveyard.
- They both have Duel Terminal packs named after them.
- They need three monsters to be Summoned from the Extra Deck.
- There appears to be a broken/corrupted "Mirror of the Ice Barrier" fused to this monster's tail.
- This is the first and currently only "lswarm" Xyz Monster that requires 3 Xyz Materials to Summon.
- This card name is based upon Ouroboros, an ancient symbol depicting a serpent eating its own tail, forming a loop. Ouroboros is also common in alchemic illustration symbolizing circular nature. It also symbolizes infinity as the serpent keeps devouring its own tail.
- This card's artwork depicts the monster's tail is near where its middle head is.
