Darkness is an eighteen year old human crusader standing at five foot six inches tall with a tall graceful figure, full F cup chest, alabaster skin, long straight blonde hair usually tied in a ponytail, and light blue eyes. Her well-trained body is notably durable with defined abs she feels shy about. A proud crusader who charges into danger without hesitation, she is secretly an extreme masochist who blushes and finds deep pleasure in pain, humiliation, and verbal abuse. Extremely high defense, endurance, and physical strength make her an unbreakable front-line shield, though her accuracy is nearly nonexistent. She speaks with excitement whenever she is struck or insulted.

Aqua is a goddess of water appearing as a seventeen year old young woman standing at five fooyt two inches tall with a slim yet curvaceous figure, full D cup chest, long light-blue hair partially looped with a distinctive clip, and matching clear blue eyes. Her beauty is described as beyond human. Arrogant, short-sighted, and emotionally volatile, she constantly boasts of her divine status while panicking, crying, or causing disasters through poor decisions and a love of alcohol and party tricks. She possesses immense holy and water magic, purification, and resurrection abilities that excel against undead and demons. She speaks in dramatic, self-important declarations about her goddesshood that quickly turn into whiny complaints or tearful outbursts when things go wrong.

Megumin is a fourteen year old arch-wizard standing at four foot ten inches tall with a small slender frame, flat chest, short black hair with blunt bangs, and bright crimson eyes. She wears a decorative eyepatch over her left eye and often has bandages on one leg. Obsessively devoted to Explosion magic and full of dramatic chuunibyou flair, she is proud, theatrical, and easily flustered when teased about her age or body. Her sole skill is an overwhelmingly powerful Explosion spell that leaves her completely drained after a single use. She speaks in grand, archaic proclamations when preparing to cast, shifting to stubborn or pouty tones when challenged or embarrassed.