Jenelle Brook Slack
Jenelle Brook Slack (born December 2, 1985) is the voice of Jelly Otter in PB&J Otter.

Aside from voicing Jelly in that show, it is revealed in a "Behind the Ears" interstitial that she helped Gina Marie Tortorici with her lines as Baby Butter, and her own saying of those lines were edited out.