I'm bored and caffeinated, so mash up time!
The Magna Defender
A cloaked knight, with a sword that could turn into a shotgun. Watched his son be murdered, and was then sealed away for 3000 years, where his hate and desire for revenge changed him. He fused with the Red Rangers brother, which let him escape, and in his quest for vengeance, he frequently put the Rangers and civilians in danger. Soon, the good of Mike's soul clashes with his deeds, and the good inside of him starts to destroy his body.
Defining moment: Walking through flames and energy bursts to sacrifice himself and undo a chain reaction he set in place, that would have destroyed his sons murderer, but thousands of innocent lives as well. PRLG Magna Defender sacrifices himself
Koragg, The Knight Wolf
One of the original Mystic Force Rangers (backstory) who sealed the Underworld with himself inside, committed to battle The Master eternally, until he fell. Dark Magic warped Lianbow into Koragg, The Masters subservient henchman, but his sense of honour remained, and it often hindered his ability to serve darkness.
Defining moment: Its... hard to put a clip here o.O there were plenty of great scenes, but none stand out to me. Its especially confusing since any scenes I would have chosen happen after Koragg becomes Lianbow again, or when his son becomes the new Koragg. I'll need a clip, but this was a hard choice to make...Koragg: The Knight Wolf Tribute
Anubis 'Doggie' Kruger
The last of his species, he fought his last stand as his planet was destroyed by Emperor Grumm, but was left alive to suffer. Becomes the leader of Space Patrol Delta on Earth, but when Grumms fleet sets its sights on Earth, his demons come back to haunt him.
Defining moment: I was torn between his last stand on his planet, and the scene where he finally faces Grumms general, who defeated him in that same scene, but the last one wins in the end. Truly epic scene.Shadow Ranger Debut Fight
I chose these three because of how strikingly similar they are... each uses a sword and fights with some measure of honour or general mastery (where as Rangers rarely come off as seasoned, long time masters) and each treads a dangerous line between Hero and revenge obsessed Anti-Hero, due to a tragic backstory. A fight between any pair, or all three, is almost impossible for me to side with...