All characters, new and old, have a "third form" costume in Dissidia 012[duodecim]: Final Fantasy. Before we show more screenshots of Cecil and Cloud, let’s take another look at Tifa.
Here’s Tifa in her original Final Fantasy VII outfit and Advent Children "another form."
Now for the main attraction, the first Dissidia 012[duodecim]: Final Fantasy third form fashion show starting with Cloud.
Sephiroth (original Final Fantasy VII costume)
Cecil (Final Fantasy IV DS costume)
Golbez (Final Fantasy IV: The After Years costume)