Ozzie (ビネガー "Binegā"?, Vinegar) is one of Magus's henchmen, alongside Slash and Flea in Chrono Trigger. Ozzie also appears as a secret boss in Chrono Cross, along with Flea and Slash. Using the Forget-Me-Not Pot, the player can trap Ozzie and transform into him through Sprigg's Doppelgang Tech.
Ozzie was shown as a Green skinned and slimy, while he was being heavily built. Along with his tail, Ozzie is iconic for his white robes
Ozzie resides in the Middle Ages. One day, Janus appeared in front of him by a Gate created by Lavos in the Antiquity. Seeing that he was a human, he sent some Blue Imps at him, which Janus defeated with his magic. Upon seeing the power Janus had, Ozzie likely raised him and taught him the ways of a fiend.
Eventually, when Janus became Magus and later became a powerful figure in the Middle Ages era. After Glenn and Cyrus obtain the Masamune, they are confronted by Magus and Ozzie. Ozzie comments that Glenn looks like "a scared little frog with no pond to jump into", so he asks Magus if he can give Glenn a more fitting form. Magus shoots a bolt of lightning at Glenn, which causes him to transform into Frog, making Ozzie partly responsible for Glenn's transformation.
War and Crono's arrival
When the fiends were fighting the humans, Ozzie was one of the commanders at Zenan Bridge, When Crono's party arrive at Zenan Bridge during the battle, Ozzie introduces himself, saying he is one of Magus's three generals. He sends skeletons after Crono's party, and when he runs out of them, sends Zombor at them and then flees to the Fiendlord's Keep.
At the Fiendlord's Keep, Ozzie greets them and tells them Magus was busy told them that they'll have to do business with him after Slash and Flea, as well as 100 monsters in the keep. He then disappears.
After defeating Slash and Flea, the party meets Ozzie again. He calls upon Slash and Flea, though they do not appear, resulting in him being "in a pickle" and placing traps ahead of the party, though they pass through all of them. When he is at a dead-end, he tells them that Magus should be done summoning Lavos and then has a barrier surround him while the party defeats him. His barrier is impenetrable, so the party attack some chains that open a trap door below Ozzie, resulting in him falling through the keep.
Sometime later, Ozzie resides at his own castle, named Ozzie's Fort, and now renames himself Great Ozzie (or Ozzie the Great). When Crono's party and Magus arrive there, Ozzie greets them and is surprised at seeing Magus with Crono's party and calls him a traitor. Ozzie then disappears and sends Flea and Slash at them, both of which are also surprised to see Magus with Crono's party, though they both are defeated.
As they go through the castle's floors, Ozzie sends various obstacles at them, though the party gets past them all. When he is at a dead-end, he, Slash, and Flea fight the party together, though they are all defeated. Ozzie tells Magus that he used him to create a world for fiends, though Magus tells him he only sought power. Ozzie then says he can not lose and has another barrier like the one he had in the Fiendlord's Keep surround him. The party again attacks some chains, though this results in trap doors appearing underneath them. They fall a floor below and make their way back up to Ozzie.
Once they reach the floor Ozzie is on again, however, a single cat enters the room and hits a switch, resulting in a trap door appearing below Ozzie. He falls through the trap door and is never seen again. However, it is likely he survived because his descendent Ozzie VIII lives in Medina village in 1000 A.D.
Peace with the fiends
After Ozzie's death, the fiends no longer hate the humans and both co-exist peacefully in the Present, whereas in the original timeline humans and fiends still hate each other.
Boss Battle Fights
The first time he is fought on Zenan Bridge, he will run away when all of his Lancers have been beaten, finally calling on Zombor to do his dirty work for him when he is cornered. Additionally, the Lancers will all be destroyed if a party member strikes Ozzie in one turn, breaking his spell.
The Fiendlord's Keep
The second time, he is faced with the Fiendlord's Keep. He will run away every time you get close. You face four basic rooms where his mechanisms pose dangers to you:
He later reappears in his own Lair in 600 AD along with Super Slash and Diva Flea (or Flea Plus). He is simply a supered-up version of the Ozzie fought in the Fiendlord's Keep and on the Zenan Bridge. Unlike Slash and Flea, he doesn't fight on his own, and only fights at the end of the fort with Slash and Flea. Although Ozzie has the most HP of the three bosses, he's the least dangerous because outside of team attacks that Slash and Flea perform with him, he has no attacks of his own, so it's best to go after him after killing Slash and Flea.
Ozzie's name in the NA translation of the game comes from heavy metal legend John Michael "Ozzy" Osbourne.