Mail Whale

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Mail Whale
Character Information
First Appearance	Snowdin
Leitmotif	Delivery!

Mail Whale is recurring character in Undertale Yellow. They are assigned a task of delivering mail throughout the Underground and shipping others from one location to another.

Profile

Appearance

Mail Whale is a monster resembling a pink whale with a white underbelly and small wings. It wears a blue mailman cap on it's head and a bag on it's flipper.

Main Story

A UGPS station

When Clover interacts with a UGPS station, Mail Whale descends from above and gives them mail (provided he has any to offer). Later on in the game, in the farm section of the Dunes, Mail Whale will reveal that Clover can also interact with UGPS stations for Fast Travel, to quicky access previously visited locations that have UGPS stations.

Neutral Route

Mail Whale appears in the Steamworks with a letter from Martlet, giving it to Clover immediately without ring as she had paid premium fee for priority mail. If Ceroba was previously following Clover or a Genocide Route is aborted in the Steamworks, Mail Whale instead appears right outside The Furnace.

Genocide Route

While Mail Whale greets Clover in their initial encounter, they stop appearing altogether once the Snowdin kill count is exhausted.

Trivia

• Mail Whale rhymes whenever encountered at a UGPS station. At the Wild East Saloon, it is revealed to be company policy.
• If you abort the Genocide Route by not killing all the robots in the Steamworks before fighting Axis, the Mail Whale will appear to give you Martlet's letter in The Furnace, but the UGPS station will still not be useable to pick up new mail or to use Fast Travel.
• Mail Whale was first (briefly) shown in the Snowdin trailer, and was officially revealed in the May 2018 Devlog, on Gamejolt.