The Valentium is a Legendary pet in Bubble Gum Simulator. It was obtained by opening a Valentine Egg (2019). The chance of hatching it was 0.00125% (1 in 80,000), or 0.0025% (1 in 40,000) with the Lucky Chancesgamepass.
Trivia
This pet was originally called the Hexarium V2, but was later changed to Valentium.
The shiny version looks almost identical to the shiny version of the Hexarium.