Mathematical!

"Mathematical!" was a promotional video series for Adventure Time produced briefly by Frederator Studios in the first half of season three. It was posted on a Youtube channel and linked to on the Frederator Blog. "Mathematical!" was made by Frederator Studios, and did not involve the actual Adventure Time crew. Its producer was Dan Rickmers.

Controversy and cancellation
The series ended due to a controversy surrounding the recap for the episode "What Was Missing". The "Mathematical!" recap focused on the lesbian subtext between Princess Bubblegum and Marceline. The video was uploaded to Frederator Studios' blog and Youtube channel for a short time before Fred Seibert, the head of Frederator Studios, chose to take it down, and issued an apology: "In trying to get the show’s audience involved we got wrapped up by both fan conjecture and spicy fanart and went a little too far."

On Formspring.me, writer/storyboard artist Adam Muto stated that he had a problem with the video: "If it was just a fan video there would be no problem at all.

The problem was that it was made by a production company actively involved with the show.

The video took something that was a possible subtext and declared it, in effect, text and made it seem like the production was actively seeking out input on plot development."

As a result of this situation, "Mathematical!" was discontinued and Dan Rickmers was fired from Frederator Studios. Fred Seibert stated that the decision to pull Mathematical! was not influenced by the Adventure Time crew nor by Cartoon Network.