Integrity Soul
The blue human soul
"The same person, watched or not."
Test if you're Integrity20 questions · about 3 minCanon facts
The Ball Game's blue flag names the blue soul "Integrity."
Its linked items, the Ballet Shoes and Old Tutu, can be found in Waterfall.
Blue SOUL Mode gives the soul gravity — you must jump to dodge. It appears in the Papyrus fight and again in the Sans fight.
In the Photoshop Flowey fight, the blue soul attacks with ballet-shoe patterns.
What it means
Integrity's blue mode is the gravity mode: consequences have weight, and you carry them visibly. High-Integrity people keep receipts on themselves first — promises feel physical to them, and breaking one costs more than keeping it ever did.
The shadow side is rigidity: holding others to agreements they never made. Gravity keeps you honest, but it was never meant to keep you stuck.
Gravity keeps you honest — not stuck.
Interpretation layer — a fan reading anchored in the canon facts above, not game text.
FAQ
What color is the Integrity soul in Undertale?
Blue. The Ball Game in Snowdin names the blue soul "Integrity" on its flag.
Which items are linked to the Integrity soul?
The items linked to Integrity are the Ballet Shoes and Old Tutu (Waterfall). Each soul's item pair is left behind by one of the fallen humans.