In model he is actually the same size as Hat Kid without a hat

How to get timmy?

Oh he's scrapped sadly :( there are mods to bring him as playable tho

Also there's Luigi. If you beat all the deathwish with no deaths you will be given a Luigi

Rlly? If it's true I will never be able to obtain luigi cause I suck at death wish. I can't even beat the heating up mafia but You have to cool down thing... With peace and tranquillity...

No, it isn't true. It's a reference to SM64 which snatcher can sometimes say