Pentakill Is A Metal Band Initially Referred To In The MOBA Game League Of Legends Created By Riot Games Inc. The Style Could Be Described As A Mix Of Power Metal And Heavy Metal Although Some Songs Are Representative Of Styles Such As Orchestral "Orb Of Winter" And Electronic/industrial "The Hex Core" . Within The Video Game Lore The Members Are Karthus - Vocals Olaf - Drums Mordekaiser - Guitar Yorick - Bass Sona - Keyboard All Members Reside On Valoran A Continent On The Fictional World Of Runeterra. For The Release Of The Band's Debut Album The Contributors Are Christian "Praeco" Linke - Guitar Mixing Programming Producer Dan Negovan - Additional Programming Arrangement On “Orb Of Winter” Derek Sherinian - Keyboards Synthesizers Jason "chupacobbler" Willey Aka ProtoShredanoid - Guitar Eugene "kyugene" Kang - Bass Gregg Bissonette - Drums Sebastien “Chemicalseb” Najand - Djembe Jorn Lande - Vocals On “Lightbringer” And “Thornmail” ZP Theart - Vocals On “Deathfire Grasp” And “Last Whisper” Lisa "Saiyaka" Thorn - Vocals On “Orb Of Winter” Hollywood Scoring Orchestra On “Orb Of Winter” Noah Gladstone - Contractor On “Orb Of Winter” Alex “Scherzophrenia” Temple - Mixing On “Orb Of Winter” Danny "LADecay" Kim - Drum Recording Producer Frank Rosato - Drum Recording Engineer Danny Lohner - Producer & Mixing On “The Hex Core” Kyle "anvilanche" Leary - Epic Voice Of Doom On “The Prophecy” Oliver "RiotOtown" Chipping - Whispers Of Death On “Last Whisper” All Music And Lyrics Are Written By Riot Games Engineered Produced And Mixed At Riot Games In Santa Monica CA Mastered By Troy Glessner