Larry

Background
The name Larry was originally mentioned by Blackout upon discovery that Nibbles had been secretly traveling to Hippo Land through the Dowdy Clan portal.

Blackout and Whitning were discussing the loyalties of the subtitute guards hired to protect the portal, as the guards had been absent during Nibbles' unauthorized portal usage. Blackout questioned if the name "Larry" appeared in the call log of a cell phone stolen from one of the temp guards (the name was never found.)

What exatly Blackout was concerned about is unknown, as Larry has made no other appearances since then.