Greater Doppelgänger

Greater Doppelgänger (グレーター・ドッペルゲンガー) is a race of higher tier shape-shifters from YGGDRASIL.

Appearance
Unlike a doppelgänger, a greater doppelgänger has four fingers on each hand.

Abilities
Greater Doppelgangers can imitate people of up to level 60 such as the members of Pleiades. However, unlike the NPCs like Pandora's Actor, they can only copy up to 90% of the originals’ abilities. Pandora's Actor on the other hand, is capable of transforming into people from Ainz Ooal Gown up to level 100, but 80% of the power output is by far seems to be his limit.

Reasonably so, the Greater Doppelgängers are powerful variants of doppelgängers with the power to copy the abilities of players and Custom NPCs.

Additionally, the abilities of these shape-shifters can fool the senses of even a level 100 player. However, there was a spell that could dispel the Greater Doppelgangers’ shapeshifting, but using that spell would keep them from transforming again for a period of time due to its effect.

Trivia

 * Pandora's Actor is the first Greater Doppelgänger introduced in the Overlord series.
 * There is a group known as the Eldritch String Orchestra that is composed of Greater Doppelgängers.