Mortimer Goodsight

is a non-playable Yo-kai introduced in the first game.

He is always disguised as a human, and is the owner of the "Timers & More" watch shop.

Apperance
In his human disguise, Mr. Goodsight looks like a wrinkly old man with wild, white, curly hair, and bushy eyebrows.

He wears a loupe on his right eye, and a red knit cap on his hat. His shirt is yellow and he wears a green vest over it.

Nate Adams/Katie Forester and Whisper
He befriends the player and Whisper in the first game after they retreive his underwear, and remains a valuable ally afterwards.

Abilities and Powers
He appears to be a skilled watchmaker, being able to easily upgrade the player's Yo-kai Watch up to S-Rank.

History
In Yo-kai Watch 1, after beating Slimamander, Whisper suggest that the player might need to upgrade their Yo-kai Watch's rank, in order to be able to fight and befriend stronger Yo-kai.

They go to Mr. Goodsight's shop to have him work on the watch, and he tells them to bring him a cog, a screw, and a spring to do it. However after they bring him those items he reveals that he can't do any work without his lucky underwear, which he forgot at the public bath.

Once the player returns his underwear, he begins to work on upgrading the Yo-kai Watch to D-Rank, not knowing that Sproink has since worn his lucky underwear.

Afterwards, Mr. Goodsight will keep upgrading the Yo-kai Watch, but will have the player defeat some strong Yo-kai first, to prove that they're capable of handling more power already. Upgrades D-A are required to beat the game, Upgrade S is optional.

Trivia

 * Altough he is actually a Yo-kai, his true form hasn't been revealed as of yet.