Halloween officially arrives at Disneyland, California Adventure

ANAHEIM, Calif. (KABC) -- Halloween has arrived at the Disneyland Resort!

The celebration of all things spooky started Friday at both Disneyland and California Adventure. The frightening festivities will last through Oct. 31.

Favorites like Space Mountain: Ghost Galaxy and Haunted Mansion Holiday are back.

MORE: Disney's Halloween Time transforms California Adventure for 1st time

For the first time ever, Disney's California Adventure Park in Anaheim is being transformed into frightful Halloween fun.

Also new at California Adventure -- a character encounter with Vampirina.

Riders will also help save Groot from crazed creatures on the Guardians of the Galaxy - Monsters after Dark.

Disney is the parent company of this station.