Onox

Onox is the evil General of Darkness from the game Oracle of Seasons. He, like Veran, is used by Twinrova, but his goal is to fill the land of Holodrum with destruction. He succeeds in his goal by imprisoning Din, the Oracle of Seasons, and sinking the Temple of Seasons. Even though Link defeats him, his purpose is still served, leading to a much greater problem for Link.

Strategy
Onox deals out massive physical damage with his attacks, so it is in Link's best interest to dodge. His armor also blocks normal attacks with the sword, so Link must use spin attacks to get through. Onox's range of attack normally doesn't reach beyond the Ball & Chain Trooper, but he is also capable of bringing down a barrage of rocks from the ceiling, and summoning up to four tornadoes. Partway into the battle, Onox will summon a frozen Din as his shield. The Rod of Seasons must be used to knock Din away, or Link will be electrocuted whenever he attacks Onox. Besides this, Onox's attack pattern hasn't changed. Din, however, will always drift back to Onox eventually. After Onox is defeated again, he will transform into Dark Dragon.

Trivia

 * The Gerudo Symbol appears on the chest plate of Onox's armor.
 * Onox also bears a striking resemblance to the Iron Knuckles from Ocarina of Time, despite the fact he wears golden armor instead of white or black and uses a flail instead of an axe.
 * According to the Oracle of Seasons manga, Onox's motto is "to be a gentleman at all times".
 * Onox's name is misspelled in the Oracle of Ages linked game as Knox, when Twinrova announces that she will not fall like Veran or 'Knox'.