Simon Petrikov aka ice King (voiced by Tom Kenny) is a recurring antagonist-turned-supporting protagonist of the show Adevnture Time.
Ice King was originally a human antiquarian named Simon Petrikov who bought his crown from a dock worker in northern Scandinavia, predating the Mushroom War. Wearing the crown, Petrikov began to lose both his mind and then his fiancée Betty; this explains his subconscious need for princesses. He soon began deteriorating in both mind and body over the years into his current state. Sometime before the Mushroom War he also discovered the Enchiridion. 996 years before the events of the series and directly after the Mushroom War, he met, befriended, and took care of young Marceline. Eventually, he realized that his deteriorating mind and behavior would possibly become a threat to young Marceline. Thus, he wrote a letter to Marceline, describing why he could not help her anymore and imploring her to forgive him for whatever wrong he might do with the crown possessing him.
- Before Ice King was fully corrupt, he was a father figure to Marceline when she was a toddler.
- The Ice King is approximately 1,043 years old.