Beg is a character that appears in Spelunky 2. They are the sibling of Tun, and gives the player the True Crown. Beg is a rat person like his sister, with a short bun, who will always appear to the player as cursed. He seems to be a michevious, and chaotic character, and based on interactions with Tun, is implied to worship Hundun.
True Crown - Chain
After the player destroys an altar, Beg will appear at the next altar they come across. He will wander back and forth on top of the altar until the player interacts with him, upon which he will say "You seem to enjoy chaos!". He will drop a bomb bag for the player then teleport away.
When the player encounters another altar while cursed, Beg will appear again. He will tell the player "Ah, so you truly do love chaos!". He will drop the True Crown for the player, and will teleport away. The player must be cursed before entering the stage.
The True Crown itself, will teleport the player every 22 seconds, and give them 22 bombs along with it.