A font made with Minecraft items* starting with the letter it's representing!**
*Exceptions are the Jack o'Lantern, Vine, and Zinc.
**Exceptions are the Netherite Upgrade and the Axe.
Inspired by this
List of things that might not be obvious:
O - Orange dye
U - Netherite Upgrade
Y - Yellow dye
Z - Zinc (from Education Edition)
Used for the (overworld?) dialogue of none other than the great and shattered Dr. WD Gaster. Note: the Undertale version of Wingdings has different symbols than normal Wingdings, for specifically the apostrophe & quotation mark characters.