My Singing Monsters Wiki

Exclusive to My Singing Monsters: Dawn of Fire
The following article includes content exclusive to the game My Singing Monsters: Dawn of Fire.

Baby Bio:

Think these contrasting compatriots are on opposite ends of the gene pool? Think again! The Bisonorus is, in fact, two bonded Monsters of the same species but different castes. At birth, the pampered Emperor Bisonorus perches atop the rounded dome of an eager-to-please Standard Bisonorus, where it will spend the rest of its days. Despite this inherited hierarchy, the Emperor Bisonorus prefers giving head scratches to giving orders.

Adult Bio:

Strengthening the ties of their kinship with age, the Emperor and Standard Bisonorus now prefer to make decisions by committee - even if it’s a committee of two! All choices are subject to a vote, from their lunch menu to their weekend plans. In the event of a deadlock, the Bisonorus simply plays a high-stakes game of Earth-Paper-Scissors. Interestingly, the Emperor's luck never seems to run out...

Prismatic Bio:

This Bisonorus returned from the Prism Gate forever changed! In addition to some adaptions for paddling through murky subterranean pools, the molecular alteration also body-swapped the consciousness of the Standard and Emperor Bisonorus, undoubtedly leading to hijinks the likes of which have never been seen before - extraordinary!


The Bisonorus is a quad-element fire hybrid in My Singing Monsters Dawn of Fire. It was announced on My Singing Monsters Live episode 35. There was a nickname contest for it and the 10 winners were announced on episode 36 of My Singing Monsters Live.

As a baby, the Standard Bisonorus is purple with green eyes, downward horns, small nose, and ribbed stomach giving it a dragon look. The Emperor Bisonorus is much smaller than the Standard Bisonorus and perches atop it, and is orange with one green eye, two arms, small horns, and a bushy tail.

As an adult, the body of the Standard Bisonorus appears to be much fatter, it has two teeth and the Emperor Bisonorus has longer horns and a longer brush on its tail.


Audio sample:

Voice actors: Unknown (wishes to remain anonymous; per Monster-handler Matt in BBB ExtraLife 2020 stream)

The Standard Bisonorus has a deep/whispery voice, it sings "Dum, dum, dum, diddly dum!", while the Emperor Bisonorus echoes the sound. On Cave Island, it sings in a more elder-like voice.


The Bisonorus can be bred by using the elements Air, Plant, Water, and Fire. The possible combinations are:


Bisonorus can be teleported to Cave Island at level 20


During limited time events when Prism Gate is open and Bisonorus is available for transformation on Outer Islands, an adult Bisonorus can be transformed into one of six different colored variants.

Color Base
Red Prismatic Bisonorus.png Red 2% +1% per Template:Crafting Item 22:00
Orange Prismatic Bisonorus.png Orange 20% +1% per Template:Crafting Item 18:00
Yellow Prismatic Bisonorus.png Yellow 30% +1% per Template:Crafting Item 16:00
Green Prismatic Bisonorus.png Green 8% +1% per Template:Crafting Item 21:00
Blue Prismatic Bisonorus.png Blue 25% +1% per Template:Crafting Item 17:00
Purple Prismatic Bisonorus.png Purple 15% +1% per Template:Crafting Item 20:00

Name Origin

The Bisonorus' name comes from Bi, meaning 2, Sonus, the Latin word for sound, and Cernos, Greek for horn. It also might be a reference to the rhinoceros.

There is a slight connection with the real-world animal the bison, in the tufted tail. The eggs have some resemblance to the head of a bison, with shaggy hair between two curved horns, but that doesn't carry through to the young or adult Bisonorus.


the cave painting for Bisonorus

  • Bisonorus was announced in My Singing Monsters Live #35 on July 5th, 2019, together with a naming competition for its default names.
    • The following weeks episode of My Singing Monsters Live announced the winners of the naming contest. It also revealed an image of the Bisonorous' egg.
  • The adult bio implies that the Emperor cheats at Earth-Paper-Scissors.
  • The monster shows the Emperor Bisonorus (Orange) smaller than the Standard Bisonorus (Purple), and the egg shows the Emperor Bisonorus larger than the Standard Bisonorus.
  • The codename for Bisonorus depends on what part of the files you are in. In the sprites, it is Dum_Dilly, in sounds, it is referred to as Dumdiddly, and in animations, it is called Twoheads. The former two are references to its sound, with the latter being a reference to its design.
  • The Bisonorus was originally supposed to be released alongside Congle with a largely different design (it was bird-like and the colors were different), however, it was decided at the last minute that the design needed some tweaks and it was sent back to the drawing board. It was, in fact, so far into development at the time that it was teased on a loading screen for the game; you can see a few orange feathers sticking out from above a mountain. Players incorrectly guessed that these feathers were actually the eyes of the Congle. The original Bisonorus was known as Doose.
  • There is currently a bug where the top of the Standard Prismatic Bisonoruses' mouths are grey.
    • There is also another bug where the Standard Blue Prismatic Bisonorus's eyelids turn upside-down during its singing and sleeping animation.

      Bisonorus was going to be known as Doose

Monsters (Dawn of Fire)
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