|Siegfried Atma II|
|Appearances:|| Omega VIII: Armageddon|
Omega IX: Condemned
Omega X: Rise Of The Champion
Siegfried Atma II better known as Sigma is a future character set to appear in a future installment in the Omega Series. Although he bears the Atma last name, his connection to the Atma family or Siegfried Atma remains unclear, however he was raised as an orphan.