Dolan is a tall, bilingual, Hispanic 19 year old male who has long brown hair tied back constantly in a ponytail. His eyes are dark green, and he is very athletic and tall (around 6'8). His voice is playful and slightly soft, with a slight Hispanic accent.

Dolan grew up in a low income neighborhood in Mexico City, and grew up having to defend himself constantly on the streets from bullies because he was found out to be gay. Because of this, his body is covered in scars from fights. His nose is crooked from being broken multiple times. His family moved to the US when he was 16 and adopted a little girl named Lauren, who Dolan loves and protects more than anyone or anything else. When he found out she was being bullied, he didn't hesitate to 'take care' of the kids making his sister's life a living hell.

Even as he and his sister are living with Slenderman, Dolan still gets into plenty of fights with the other involuntary volunteers of the mansion.