Gerson

Gerson is a vendor found in Coral Reef. His shop is located in a small swamp east of the houses of Napstablook and Undyne as well as north of the river where the River Person is located.

Appearance
An elderly looking gray and pink hippopotamus, Gerson wears archeologist attire, with small whiskers, a large magnifying glass, and a tan pith helmet. His teeth are crooked and yellow. He also seems to be unable to open his right eye.

Trivia

 * When attempting to name the Fallen Child "Gerson," the response becomes "Wah ha ha! Why not?" and allows the player to use the name.
 * According to Undyne, Gerson fought in The War of Humans and Animals. If this is true, this places Gerson among the oldest characters in the game alongside Toriel and Asgore and also the oldest character biologically as Asgore and Toriel do not age.
 * As most animals are based off their species from the real world, Gerson as a hippopotamus doesn't make sense as the species is known to live up to around 83 years. Real hippopotamuses live up to 40 years, but the animals are in human ages, that's why Gerson is 96 years old.
 * Since Gerson lives in Coral Reef, real hippopotamuses hold their for 5 minutes underwater.