Almost every single Zelda game's main antagonist is Ganon or Ganondorf (or both). They are all unique and have different backgrounds and storylines. These are a few of my favorite designs for Ganon or Ganondorf.
Ganon - Legend of Zelda
This was the first Ganon ever. The classic Ganon design resembles a bulldog more than a boar.
Ganon/dorf - Ocarina of Time
This ganon looks a lot more like a boar than the original version. This was also the first Ganondorf. He looks sort of demonic.
Ganondorf - Windwaker
In Windwaker Ganondorf looks almost like a king. He towers over Link so that makes him pretty intimidating.
Ganon/dorf - Twilight Princess
This is the most boar-like Ganon there is. The huge pig provides a very exciting battle. This is actually my favorite Ganondorf design. He looks like a warrior. The wound in his stomach makes him look almost immortal. He is by far the most powerful looking Ganondorf design.
and finally....
Ganon - CDI games
THIS IS THE BEST GANON! BOW DOWN TO HIM!
Jk, he's the worst