Ventricosus Pebble is a supporting character in the anime and manga series Houseki no Kuni (Land of the Lustrous). She is the Princess of the Admirabilis, a race of marine creatures distinct from the Gem people. Ventricosus is characterized by her elegant and regal demeanor but is also shown to be conflicted and desperate due to her circumstances. Her actions, motivated by the desire to save her brother, play a significant role in the development and hardship of the protagonist, Phosphophyllite.