Smoldergeist
- Not to be confused with Bouldergeist.
- Not to be confused with Poltergeist.
Smoldergeist serves as the second boss in the real world in Mario & Luigi: Dream Team, that only makes an appearance in the depths of Pi'illo Castle. A Smoldergeist put the Bros. into the test in every room they enter. Upon Mario and Luigi's arirval to where Princess Peach and Toadsworth were being attacked by Smoldergeist, they all disappear. Once the Bros. take Prince Dreambert (in pillow form) and a pair of badges from the statue in the room, the statue causes an earthquake and then summons four Smoldergeist to battle the Bros. as punishment for taking the items.
Smoldergeists are purple Spirit Balls with eyes.
At the beginning of the battle, Starlow will put out all of the Smoldergeists, allowing the Bros. to attack them. If the Bros. try to jump on them when they're ignited, they will take 1 damage but will put out the Smoldergeist's flame, making it possible for Mario and Luigi to attack. Smoldergeist will also exhaust their flame if all of their attacks in a single turn miss.
Smoldergeists reignite after a few turns. A Smoldergeist can shoot fireballs at a Bro., its eyes turning red or green depending on which Bro. it's aiming for. They may also send out a ring of flames outwards from it at the Bros., which can be dodged by jumping if the Smoldergeist is on the same level as the Bros., or idling if it's above their level. A burnt out Smoldergeist's only attack is to roll towards a Bro., which can be dodged by jumping over or on to it. Upon the Smoldergeists' defeat, they are not seen for the rest of the game.