What is the best character on castle crashers

The best character is completely based on how you play. The Orange knight is the strongest if that's what you mean. But, out of every character in the game including downloads and unlockables the presets are actually the best.

• The Blue Knight can freeze enemies but doesn't do much damage, so I recommend that to more adept players.
• The Red Knight can continuously zap enemies and does an average amount of damage, I would suggest that to new players.
• The Orange Knight does the highest amount of damage, so he's okay for people who have already beat the game or first time players.
• The Green Knight does corrosive damage (continues damaging after hit) so that would be moreover if you're used to the game.