Temmie

Temmie is a species of monster in the Underground. They appear as a unique enemy in Waterfall, residents of Temmie Village, and the vendor of Tem Shop. All Temmies share an erratic manner of speech, where they often exclude letters, mix lower and upper cases, make inconsistencies, etc. There are some exceptions, however; Bob always speaks in perfect English, the Temmie Shopkeeper speaks in fluent English when the protagonist refuses to sell an item she wants, and regular Temmies in-battle speak in somewhat proper English when denied Temmie Flakes.