The original Royal Tart Toter went insane due to Princess Bubblegum. 
Before the bridge (where Cinnamon Bun went) was built, Princess Bubblegum just sent him (the Royal Tart Toter) away and thought he just went through the desert alone. To support this, you can see this bridge seemed rather new, even more so since the others but the Princess seemed to know nothing of this obvious bridge. It’s rather sad that he must of gone back and forth across the evil desert, and once he finally snapped, instead of trying to help the Princess, he tries to look away and tells everyone to not talk to him. 
We also know Princess Bubblegum likes to play mind games, as she told Finn and Jake they had to deliver the tarts or she would die. She most likely made him snap and sent him away.
(Side note: what was she thinking when she had the paralyzing potion where they make the tarts? Was she planning on killing someone at the party?) 


Submitted by Amanda Mills. Thank you, Amanda!
= WMD =

The original Royal Tart Toter went insane due to Princess Bubblegum. 

Before the bridge (where Cinnamon Bun went) was built, Princess Bubblegum just sent him (the Royal Tart Toter) away and thought he just went through the desert alone. To support this, you can see this bridge seemed rather new, even more so since the others but the Princess seemed to know nothing of this obvious bridge. It’s rather sad that he must of gone back and forth across the evil desert, and once he finally snapped, instead of trying to help the Princess, he tries to look away and tells everyone to not talk to him. 

We also know Princess Bubblegum likes to play mind games, as she told Finn and Jake they had to deliver the tarts or she would die. She most likely made him snap and sent him away.

(Side note: what was she thinking when she had the paralyzing potion where they make the tarts? Was she planning on killing someone at the party?) 

Submitted by Amanda Mills. Thank you, Amanda!

= WMD =

Although BMO is not mutated, you can see in the episode ‘Be More’ (S5E28) that BMO has a heart, when his old creator opened BMO’s inside.
Maybe that heart is Football’s heart, or from the son of BMO’s creator. Although Moe (BMO’s creator) loved Football so much, the problem he found with him was that he was boring. When Football died, Moe took Football’s heart and re-assembled it into a robotic heart, which made Football “fun”, or in other words, Moe said, to BE MORE.

Submission by John Brice Marcaida. Thank you, John!
= WMD =

Although BMO is not mutated, you can see in the episode ‘Be More’ (S5E28) that BMO has a heart, when his old creator opened BMO’s inside.

Maybe that heart is Football’s heart, or from the son of BMO’s creator. Although Moe (BMO’s creator) loved Football so much, the problem he found with him was that he was boring. When Football died, Moe took Football’s heart and re-assembled it into a robotic heart, which made Football “fun”, or in other words, Moe said, to BE MORE.

Submission by John Brice Marcaida. Thank you, John!

= WMD =

The penguins may be super mutated, not by looks, but in a lot of other aspects, such as being fused with cats.
It’s strange how all the penguins can be called Gunter by the Ice King, and they all know which one he is talking to. Also, the penguins seem rather powerful. When Finn was building his tower in “The Tower”, he was able to use penguins and stack them like bricks, and they were not affected by the weight of other objects at all. They also seem attached to Ice King, unlike the other Ice Kingdom creators that do not care one way or another. We have also seen penguins who got angry when the Ice King left (Reign of Gunters) and were easily able to take over other kingdoms with no hassle at all. 
And about the cats: Gunter birthed a rather powerful looking cat, and also once the Ice King returned in “Reign of Gunters”, he sprayed Gunter with a spray bottle, something people use for cats. A normal penguin wouldn’t be terrified like he was. The Ice King’s home also has a litter box. Perhaps the writers picked cat qualities due to the common theme of cats being known for ‘evil’ deeds, which fit perfectly for the Gunters.

Submitted by Amanda Mills. Thank you, Amanda!
= WMD =

The penguins may be super mutated, not by looks, but in a lot of other aspects, such as being fused with cats.

It’s strange how all the penguins can be called Gunter by the Ice King, and they all know which one he is talking to. Also, the penguins seem rather powerful. When Finn was building his tower in “The Tower”, he was able to use penguins and stack them like bricks, and they were not affected by the weight of other objects at all. They also seem attached to Ice King, unlike the other Ice Kingdom creators that do not care one way or another. We have also seen penguins who got angry when the Ice King left (Reign of Gunters) and were easily able to take over other kingdoms with no hassle at all. 

And about the cats: Gunter birthed a rather powerful looking cat, and also once the Ice King returned in “Reign of Gunters”, he sprayed Gunter with a spray bottle, something people use for cats. A normal penguin wouldn’t be terrified like he was. The Ice King’s home also has a litter box. Perhaps the writers picked cat qualities due to the common theme of cats being known for ‘evil’ deeds, which fit perfectly for the Gunters.

Submitted by Amanda Mills. Thank you, Amanda!

= WMD =