Elder Shrooboid

Elder Shrooboid
http://www.mariowiki.com/images/f/fa/EShrooboid.jpg

The Elder Shrooboid is a boss well known in the game "Mario & Luigi: Partners in time" for having the most annoying attacks. Just as Toadbert was about to reveal an important part of the game's plot, this monster craches into the room and turns both Toadbert and Kylie into mushrooms!

After this boss is defeated, you get the fifth and final Cobalt Star shard.

Descriptions
As the shown in the picture above in his in-battle sprite, the boss is completely red, having yellow dots and four horns around his head, making him look a bit different and superior to his sibling, Junior Shrooboid.