Laibach of the Abyss was an Old One who coerced Spike into doing its bidding by possessingDrusilla, threatening to completely destroy Drusilla's mind and render her catatonic unless Spike obeyed. Under Laibach's orders, Spike returned to Sunnydale and its Hellmouth, reclaimed the Sunken Church in Laibach's name, summoned the necromancerMatereani, gathered the Dreamers in Sunnydale, and reformed the Order of Aurelius. All of this was so Laibach could resurrect the Master and then bring forth an army of demons on Earth by using The Dreamers to build a bridge between Laibach's world and Earth and using the Master's expertise in opening portals to do it. However, this plan ultimately failed when Xander Harris and Rupert Gilesexorcised Laibach's spirit, and the Master was exorcised from Angel's body to be recorporealized and killed in combat by Buffy Summers once again. The Dreamers were also killed by Buffy, preventing any way for Laibach's plan to work.
Though he only spoke the ancient language of Primordial Sanskrit, others appeared to understand him and he seemed to understand English.