"Topologic" (トポロジック Toporojikku) is a series of DARK Cyberse Link Monsters used by Varis in the Yu-Gi-Oh! VRAINS anime. With the exception of "Topologic Trisbaena", all members of this series are Link-4 monsters with 3000 ATK. They also all require 2+ Effect Monsters as their Link Materials.
In mathematics, topology is the study of the properties of space that are preserved under continuous deformations.
"Topologic" monsters usually involve mass destruction of cards whenever a monster is Special Summoned to a Zone a Link Monster points to. In addition, they inflict heavy effect damage.
|Bomber Dragon||Klein bottle, Mobius strip, Non-trivial knot||Destroys all monsters in the Main Monster Zones.||Deals damage equal to the ATK of a monster it attacks.|
|Gumblar Dragon||Infinity, Subset/Superset||Makes both players randomly discard up to 2 cards. Once per turn, if Extra Linked, it can make the opponent discard up to 2 cards.||Deals 3000 damage at the resolution of its second effect, if the opponent ends up having no cards in their hand as a result.|
|Trisbaena||Non-trivial knot, Torus, Trefoil knot||Banishes all cards in the Spell & Trap Zones.||Deals 500 damage for each of the opponent's cards banished by its effect.|