Evil Siblings

"We share blood. But we are not brothers."

- Noob Saibot to Sub-Zero.

Evil Siblings are the type of villains who are related to the hero or heroine - brother or sister. In many stories bad sibling (most often older) bully, threatens, intimidate and abuse physically and mentally over good sibling considering him/her worse. This type can also include half-siblings, step-siblings, and adoptive siblings.

In some other case, a bad sibling (younger or older) can be jealous of a good sibling who is loved and praised by his/her family. For this purpose, he/she plans to get rid of good sibling, for example by killing him. On the one hand, bad sibling in the past were loved to good sibling, but a some tragic or wrong event, may change him/her for the worse, blaming his/her own good sibling in result he/she have a huge resentment to hero/heroine.

Also villains have their own siblings, who helps in evil plans, but in other cases brother/sister of main villains serves as incompetent, bumbling and idiotic henchmen.

Literature

 * Cain (Book of Genesis).

Animated

 * Scar (Disney's The Lion King).
 * Professor Screweyes (We're Back: A Dinosaur's Story).
 * Rameses (The Prince of Egypt).
 * Frankie (Shark Tale).
 * Hopper (A Bug's Life).
 * Teridax (BIONICLE).
 * Evelyn Deavor (Incredibles 2).
 * Prince John (Robin Hood).
 * Kron (Dinosaur).

​Live-Action

 * Loki and Hela (Marvel).
 * Henry Evans (The Good Son).
 * The eldest Indominus Rex (Jurassic World).
 * Happy Chapman (Garfield).
 * Micheal Myers (Halloween).
 * Cassius and Adrian (Little Nicky).
 * Roman Bridger (Scream 3).
 * Long Haul and Onslaught (Transformers film series).
 * Ocean Master (Aquaman 2018).

Animated

 * Wayne Cramp (Cramp Twins).
 * Terrence (Foster's Home For Imaginary Friends).
 * Amy (Total Drama series).
 * Azula (Avatar: The Last Airbender).
 * Dreadwing and Skyquake (Transformers: Prime).
 * Brad Buttowski (Kick Buttowski: Suburban Daredevil).
 * Cree Lincoln and Benedict "Father" Uno (Kids Next Door).
 * Boostwing, Jacknab, and Pilfer (Transformers: Robots in Disguise).
 * Gort, Mort and Wart (Orson's Farm).
 * Banshee (Extreme Ghostbusters).
 * Frenzy and Rumble (Transformers).
 * Blackfire (Teen Titans).
 * Prince Aragon (Danny Phantom).
 * Lola Loud (The Loud House).
 * Lord Betrayus (Pac-Man and the Ghostly Adventures).

Live-Action

 * Flurious (Power Rangers Operation Overdrive).
 * Moltor (Power Rangers Operation Overdrive).
 * Damon Salvatore (Anti-Hero; The Vampire Diaries).

Internet

 * Jeff the Killer (Creepypasta).

Videogames

 * Vergil (Devil May Cry).
 * Noob Saibot (Mortal Kombat).
 * Sylvia Anna (The Witcher 3: Wild Hunt).
 * Illidan Stormrage (Warcraft).
 * Big Brother (Five Nights At Freddy's 4).
 * King K. Rool (Donkey Kong).

Anime and Manga

 * Itachi Uchicha (Naruto).
 * Raditz (Dragon Ball Z).
 * Shockblast and Six Shot (Transformers: Energon).
 * Sesshomaru (Inuyasha).