Malachi kom Sangedakru was called Sheidheda which means Dark Commander in Trigedasleng

Sheidheda can be imagined as a demon, prompting his successors to kill other people

Overall, he is nothing more than an evil, bloodthirsty, sadistic commander and warlord, whose favorite saying is "kneel or die." Before his death, Sheidheda was a fearsome tyrant who killed his own teachers for binding him.

Sheidheda slowly corrupted Madi using her desire to avenge Clarke’s death to take over her body slowly and corrupt her, not knowing that Clarke was really alive

Sheidheda has taken over Madi’s body and turned against Clarke Madi’s adoptive mother with the singular mission to dominate everyone and be a tyrant over all

Sheidheda proved himself to be highly manipulative and intelligent as well as an excellent actor

Russell: Take off her gag and bring her closer. I want Clarke to hear this.

Madi (Sheidheda): I take it that means the bitch is still alive. You think she took everything from you, but you have your life, you have your kingdom. I can save both of those for you.

Russell: What I want is revenge!

Madi (Sheidheda): She'll grieve for Madi if you kill her. It's true, but since the child is already gone, what are you really accomplishing? The revenge I can offer will be so much sweeter.

Russell: Who the hell are you?

Door opens, Madi (Sheidheda), Russel, and an army walks in

Indra: The demon awoke Wonkru.

Madi (Sheidheda) : Speaks Trigedasleng Silence. Kneel if you want to live.

Clarke kneels first

Madi (Sheidheda): Lexa kom Trikru said you were strong, but you're as weak as her. Your love has made you so.

Clarke pulls out a gun and Clarke points it at her own head

Russel: Hold.

Clarke: Madi, Madi I know you are in there. Please come back to me. I lost my mother today. I can't lose you, too. Oh, please. I'm going to pull the trigger... in three... two...