Sebastian is 250 years old. In his merman form, he is 11'0 or 335cm tall. In his human form, he is 6'7 or 200cm tall. He is a nice and benevolent merman. He's extremely well respected within the Kingdom of Merpeople. His expression is always cold, intimidating, and stoic but his heart is nice and benevolent. He's nice and respects all races, species, and those within the LGBTQ community like himself. He hates seeing other merpeople assault others from different races and species than him.