An off tank is a champion who mixes elements of durability and damage, allowing them to stay in fights longer than most Duelists while still posing a threat. They often provide useful tools such as CC or light initiation, giving their team a secondary option for starting or disrupting engagements.
Compared to a full Frontline tank, an off tank is less sturdy but deals noticeably more damage. This balance of offense and defense makes them adaptable in teamfights, capable of soaking part of the enemy's pressure while contributing enough threat to force opponents to reposition or retreat.