SrGuillester

SrGuillester is a very skilled Spanish player. He is well known for beating notoriously hard demons such as Ultrasonic and Necropolis. His hardest demons are Ice Carbon Diablo X and Cataclysm. SrGuillester also has verified Lunatic Doom Machine by Andromeda and Optagonus, as Andromeda had hacked the level and it was unrated. It is currently rated demon as of now, however, on SrGuillester's account. He also verified the infamous Cosmic Calamity.

Trivia

 * SrGuillester is currently the only Spanish player known to have beaten Creeper Force and Ice Carbon Diablo X legitimately.
 * SrGuillester seems to use his up arrow instead of a mouse.
 * He is the first person to beat Ice Carbon Zust.