Black Sig (EntityTopic, 16)
From Compile Worlds
Black Sig, also mistakenly called Dark Sig is Sig under the influence of a mysterious power. He appears in Puyo Puyo!! 20th Anniversary as a "guest" character to purchase from Shopoi. In this appearance, he continuously questions the power brimming within him, decidedly becoming less passive in his vocalizations.
In Compile Worlds, the dark alter ego of Sig was introduced in Episode 36, when Sig had inadvertently absorbed some of Ekoro after the latter had been stabbed by Lam the Stelly's scimitar, causing him to transform. While under this transformation, Sig's emotions burst through more than usual, and he can explode on demand, much like Eta. Later, in Episode 39, the extent of Black Sig's power was made clear when he single-handedly purged Ekoro of his possessor. This power has promoted Sig as a whole to the status of a one, and allowed him to join The Tournament. Also observant as a side effect from this power is that Sig is a lot less idle and passive, actively expressing an interest to join the tournament.