The ⑨ Thousand Foot Wide Idiot (Patreon)

 [inflation, bursting], dA link 

General Advisory Note: It is recommended that if you must experiment your latest invention on someone, you shouldn't pick an individual who's likely to take things way, way too far.

Cirno -- Trina 

Nitori -- Yaddle 

Flandre -- Erichi 

Script -- Nametaken

Artwork -- StoicZS