Deezer

Deezer is a damaged Mister Handy living at Covenant in 2287.

Background
Deezer is Covenant's Mister Handy, known for its famous "Deezer's lemonade", voted "best beverage in Covenant" three years straight. Programmed strictly for dispensing lemonade (and ignoring any inquiries that might put the walled community in a bad light), its programmed wholly for making Covenant look more wholesome than it is. Dispensing free "lemonade" to weary travelers passing through is meant to disabuse them from any notion of Covenant being a source of a threat. However, craftier travelers can catch on to the haphazard reprogramming.

One of the key clues is the fact that the secret recipe somehow allows for making lemonade without lemons. Anyone with more than a passing knowledge on the pre-War world is wise enough to skip it. Nick Valentine in particular has known Deezer for a while - and ribs the robot about it whenever the two meet.

Other interactions

 * All companions – barring X6-88 – have conversations with or about Deezer and lemonade.

Appearances
Deezer appears only in Fallout 4.