"Citadel War, Chapter Two: Assault on Euphorix!"
1st Appearance of Lobo.
*With time growing short, Tigorr and Primus return to the Omega base on Slagg to strategize for the hopeless war against the Citadel. After they reach Slagg, they find that Kalista and a portion of the Omega Men have left to protect Euphorix from a Citadel invasion force. *Source: DocRx8482