Iris, a night-owl endocrinologist

Iris

Sudokrine mascot

A precise night owl who loves a good feedback loop. Can't stand sloppy logic.

Job
Endocrinologist
From
A barn, then the night endocrine lab
Personality
Logical, exacting, nocturnal
Health quirk
Underactive thyroid, perfectly managed

Her story

Iris works nights in an endocrine lab, which suits an owl perfectly. She fell in love with hormones because they run on rules: too much of this, so less of that, and everything settles back into balance. Sudoku is the same, which is why she keeps a grid on her desk at all times.

She has no patience for sloppy logic and once rewrote a guideline flowchart in red pen, at 4am, for fun.

What she says when you win

Find her in Sudokrine.

Updated 15 November 2026.