No, that also isn't who I had in mind. The answer I was looking for is Bron. During the musical number about Littlefoot's dad, Bron clearly shows many tricks, and the only word he speaks is "Ha!" indicating he found Littlefoot.

Nobody earned points this time (save me for asking the question)
The score so far:
lbt/cty_lover: 600
Petrie: 300
action9000: 100
DarkHououmon: 50
The Board:
THE FIRST FILM: ___, 200, 300, 400, ___
THE ORIGINAL GANG: 100, 200, 300, 400, ___
GUEST CHARACTERS: 100, 200, 300, 400, ___
THE EARLY SEQUELS: 100, 200, 300, 400, 500
SEQUELS, 1997 TO PRESENT: 100, 200, 300, 400, 500
TV SERIES: 100, 200, 300, 400, 500
BACKSTAGE: 100, 200, 300, 400, 500
SONGS AND MUSIC: 100, 200, 300, 400, 500
lbt/cty pick again.