|Not to be confused with Cool Moon or Cool S.|
Cool Sun is a minor character that first appeared in, "You Are Rad". He is a personified version of the Sun.
Cool Sun is a large, bright yellow star that floats in the sky. He wears dark shades over his eyes.
Formed at the beginning of the universe, The Sun is actually a star, literally, because of his very popular telenovela series that is run throughout the universe. He has decided to take a break from that and spend some time hovering above the planet mingling with the little people. Hovering in the sky above everyone is a giant ball of gas, but don’t worry, he only lets the gas out when no one is around, or when he laughs really hard.
Abilities and Powers
- Sunburn: This attack can give sunburn to anyone on earth or the plaza, causing a burn on their skin.
|93. "We Are Heroes":||Absent||103. "Radical Rescue":||Absent|
|94. "KO, Rad, and Enid!":||Appears||104. "Let's Meet Sonic":||Absent|
|95. "TKO Rules!":||Absent||105. "Let's Get Shadowy":||Absent|
|96. "Chip's Damage":||Absent||106. "You're a Good Friend, KO":||Absent|
|97. "K.O. vs. Fink":||Absent||107. "Red Action 3: Grudgement Day":||Absent|
|98. "The K.O. Trap":||Absent||108. "Carl":||Absent|
|99. "Whatever Happened to... Rippy Roo?":||Absent||109. "Dendy's Video Channel":||Appears|
|100. "Planet X":||Absent||110/111. "Let's Fight to the End":||Appears|
|101. "Deep Space Vacation":||Absent||112. "Thank You for Watching the Show":||Absent|
|102. "Big Reveal":||Absent|
- He is weak to clouds.
- His arch nemesis is the moon.
- He somewhat resembles the Steven Universe character 'Sunstone'.