Squaresoft left a shred of their classic series Final Fantasy in their Secret Of Evermore title. This obscure game features a boy & his dog trapped in an illusionary world just trying to get home. When you reach the medieval section of Evermore, you come to a town called Ebon Keep where you will meet a familiar face from the SNES game Final Fantasy II. The Dark Knight turned Paladin exchanges a few words with the hero, as pictured below...
You can trade for a Chocobo Egg in the marketplace.
When the announcer is speaking before the coliseum fight with Vigor, there are several characters from Final Fantasy 6 seated in the audience behind him.
(from left, Locke, Mog, Relm, Strago, Terra, and Umaro) - thanks Clay!