Star Spirits

They consist of Eldstar, Mamar, Skolar, Muskular, Misstar, Klevar and Kalmar. They all appear in Paper Mario and are being held captive by Bowser's followers. Their special power is Star Beam, in which they band together to negate the effects of the Star Rod. It is upgraded to Peach Beam when Twink helps out in Mario's battle against King Bowser. They also host Mario Party 5.

Eldstar

 * Powers
 * Focus
 * Refresh: Needs 1 Star power.
 * Powers Obtained: Chapter 1: Storming Koopa Bros. Fortress
 * What Focus does: Boosts Star energy.
 * What Refresh does: Replenishes Mario's HP and FP by 5. Needs 1 Star power.

Mamar

 * Power: Lullaby
 * Power Obtained: Chapter 2: The Mystery of Dry, Dry Ruins
 * What it does: Puts enemies to sleep for a short time.
 * Star Power needed: 1

Skolar

 * Power: Star Storm
 * Power Obtained: Chapter 3: The "Invincible" Tubba Blubba
 * What it does: Decreases enemies' HP by 7.
 * Star Power needed: 2

Muskular

 * Power: Chill Out
 * Power Obtained: Chapter 4: Trials in the Toy Box
 * What it does: Decreases enemies' attack power by 3.
 * Star Power needed: 2

Misstar

 * Power: Smooch
 * Power Obtained: Chapter 5: Hot, Hot Times on Lavalava Island
 * What it does: Replenishes Mario's HP by 20.
 * Star Power needed: 3

Klevar

 * Power: Time Out
 * Power Obtained: Chapter 6: Dark Days in Flower Fields
 * What it does: Immobilizes enemies for a short time.
 * Star Power needed: 2

Kalmar

 * Power: Up and Away
 * Power Obtained: Chapter 7: A Star Spirit on Ice
 * What it does: Turns enemies into stars, knocking them out of battle.
 * Star Power needed: 2

Star Beam/Peach Beam

 * Power Obtained: Chapter 8: A Star-Powered Showdown!
 * What it does: Negates the effects of the Star Rod. During the final battle with Bowser, Star Beam has no effect against the Star Rod due to the device Kammy Koopa made. After Peach and Twink defeat Kammy Koopa, this power is upgraded to Peach Beam.
 * Star Power needed: None