This is my Undertale Oc, Heath. Chara's creation and puppet of destruction. With Chara's red soul of determination.
Heath-or Eric-is a genocide character. His name comes from a flower called "Heath" or "Erica", which are flowers that point downwards to the ground. Erica flowers represent "solitude", reflecting on his personality of being blunt and betraying.
Heath has some puppet-like traits, certain parts of his joints and his eyes have a faded red glow around them and he is covered in white bandages from the ankles to the chest.
With enough determination, Chara created a weapon of destruction from the flowerbed in the beginning of the game. She shares her soul with Heath's. Chara controls him like a puppet and shares with him determination with no limits. When Heath's determination/level of violence increases, the faded red glow on his joints and his eyes turn into a more saturated red. His right eye is actually a golden flower.
Heath's weapon of choice is a red toy knife, with enough determination it can be transformed into a massive machete.
Heath was created on July 7th. His age is unknown but he seems to have the body of a twelve or fourteen year old.

The story is Chara grew him from the flower bed where she is buried. Heath wakes up with no knowledge of who he is, discovers the body of Chara and encounters Flowey. Toriel then finds him at the flower bed and like the mother-ish character she is, she takes him to her home. As she provides Heath some clothes that belonged to Asriel and his room, he encounters the shadow of Chara. While Toriel is gone, Chara explains that she created her and that his purpose is to kill everyone in the underground.
I'm actually also writing a story about it called "Mariontale". The part "Marion" is short for marionette, hence the purpose of Heath. Unless there is already an Undertale au called Mariontale, someone please tell me.
I was somewhat attached to the idea of this Oc, so sorry if it isn't to any Glitchtale standards.