The Sun

In-Game Behavior
The Sun spawns in the sky when summoned, along with a tree that spawns in the map. The Sun is completely harmless unless you touch the tree. When you touch the tree, The Sun will start to get mad. Touching the tree 3 times in total provokes The Sun to start coming towards the map. Any time you touch the tree, you'll respawn (Which doesn't count as a death.) and a minion will be summoned.

The Sun slowly floats towards the map when provoked. It summons minions into the map every now and then. The Sun won't be able to actually kill anyone unless it's minions kill players for it. Whenever someone dies, The Sun will slightly teleport in front of itself. Once The Sun makes contact with the map, then everyone dies. The minions themselves are pretty slow. As soon as somebody enters their sight, though, they'll charge at full speed. The Sun's minions can insta-kill, but their killing animation slows them down. They can also use tentacles on their back to grab players in front of them.

Trivia

 * In the Halloween Spooktacular event, The Sun's costume is based off the Adult Swim bumper titled "The Dawn is Your Enemy."