Sebastian Oliver Walker is a Spanish-Icelandic male,with long blonde hair,amber eyes,pale-slightly tanned skin,he wears a white tank top and orange pants with black Boots,he was a D-class and wears the D-class jacket around his waist,he has bandages around his forearm on both arms,he got infected by SCP-008 but lived after instantly getting attacked by SCP-049,he has scars from the patches of skin that deteriorated from both anomalies.

He is also deaf,he seems to be the product of an abusive childhood and knows how to use Machine Guns very well...