A Mortoniceras is a creature in Wreck-It Ralph: Time Preservers
History
Prior to Series
A Mortoniceras came through an anomaly leading to Sugar Rush. It was sighted by locals, and nicknamed the "Mini-Kraken". A visitor from Cool Computers, Alice, encountered the creature. Vanellope, Ralph, Felix, and Calhoun arrived, and returned it through the anomaly, though Calhoun tried to kill it at some point.
Deaths Caused
None
Trivia
Despite appearing before the series, the Mortoniceras is essential, as it caused the formation of the Time Preservers.