Ryoga Shindai (Kamen Rider Saber, episodes 28-37)

Ryoga Shindai (神代 凌牙 Shindai Ryōga) is a member of the Southern Base-branch of the Sword of Logos who transforms into Kamen Rider Durendal (仮面ライダーデュランダル Kamen Raidā Dyurandaru). He worked alongside Master Logos until he revealed his true colors and intentions, leading to Ryoga and his sister Reika to fight against their former leader.

Bad Qualities

 * 1) He's a Rip-off of Tsukasa Kadoya and Captain Marvelous, being a devoted fighter and would do anything just to satisfy himself or for Master Logos' pleasure.
 * 2) He treats his sister Reika Shindai as a worthless subordinate, at the time Reika started to get suspicious about Logos' he shutted her down as if it wasn't a serious matter, and what's worse is he barely cares about his sister still treating her like a stray dog or a worthless subordinate.
 * 3) He proclaims that a swordsman's duty is to protect the world and people, when what he was doing is the opposite of what he proclaims like being a ruthless predator, basically hunting his target, and showing no remorse whatsoever, and he barely cares about the guild and protecting the world.
 * 4) He stated that he never accepted Master Logos from the start of his swordsman duties, but if you watch closely at first he was willing to do anything as he pleases, blinded by Logos' facade and basically showing his true loyalty towards him, and finally to rub some salt on the wound, when Rintaro tried to annihilate Master Logos, he targeted Rintaro for disobeying Logos' himself turning into a showdown of a loyal pawn and a traitor even dragging touma into the scene, when Touma only wanted to save Rintaro, and he went too far like slaying Touma, who is your real target dude, Rintaro or Touma make up your mind.
 * 5) From what it seems, He is barely a swordsman, relying on his Seiken's time and portal creation abilities, so far he never using fought with his natural strength.
 * 6) Similar to Misao Mondou his personality is extremely confusing.
 * 7) His Redemption was extremely flat and pointless, considering that he barely even cares about protecting others and he rejects Touma and Rintaro afterwards for stating that they are traitors of the guild.

Good Qualities

 * 1) He's comparingly more tolerable than her sister.
 * 2) Depending on your point of view, He's more enjoyable as an Anti-hero than his initial state, bit by bit you could see him enlightening towards the other riders though he could still be a bit cold and harsh towards them.
 * 3) His Seiken looks pretty unique and badass, despite ripping off some elements from Cronus and Zi-O, and what's even cooler is that it's the only seiken that can turn into a trident.