The reason they're together is cause they're sibling's and their stories are dependent on each other.

Name:
Echo J. Chain
Age:
27
Gender:
Female
Sexuality:
Bysexual
Personality:
Overprotective, irritable but nice, and loyal.
Appearence:
Short brown hair, green eyes, freckles, a black hoodie and a red shirt, black jeans, and converse.
Likes:
Music, fighting, and singing.
Dislikes:
Death, rain, and trains.
Fears:
Death, lonliness, and darkness.
Family:
Rei Rob Chain
Other(s):
She has a very confusing backstory/story sooo, bare with me.

Name:
Rei Rob Chain
Age:
27
Gender:
Male
Sexuality:
Straight
Personality:
Hyper, energetic, surprisingly smart, and funny.
Appearence:
In media, but human.
Likes:
Food, music, experiments, and family.
Dislikes:
Fighting, darkness, and black licorice.
Fears:
Death, lonliness, and heights.
Family:
Echo J. Chain
Other(s):
Once again, complacted backstory/story.