Default appearance:

gurren-yoko, yoko littner, red hair, long hair, ponytail, yellow eyes,

rifle, sniper rifle, anti-materiel rifle,

Pre-timeskip:

yoko-pre-timeskip, thighhighs, bikini top only, flame print bikini, underboob, short shorts, scarf, elbow gloves, midriff, skull hair ornament, studded white belt,

Post-timeskip jacket:

yoko-post-timeskip, maroon jacket, thighhighs, black short shorts, bikini top only, flame print bikini, underboob, navel, midriff, studded white belt, thigh boots,

Teacher:

yoko-teacher, shrug \(clothing\), long white sleeves, pink shirt, teacher, glasses, bespectacled, aged up, necktie, hair down, long brown skirt, alternate hairstyle, puffy sleeves,

Space:

yoko-space, tube top, cleavage, bandeau, strapless, yellow eyes, star (symbol), midriff, navel, cape, tights

Swim:

yoko-swim, print sarong, swimsuit, yellow tankini, 

OVA stewardess/uniform:

yoko-ova-stewardess, garrison cap, hair down, alternate hairstyle, uniform, midriff, teal miniskirt, navel, orange necktie, gloves, pencil skirt, crop top, long sleeves, collared shirt, teal jacket, armband,

OVA casual:

yoko-ova-casual, orange tank top, crop top, midriff, blue short shorts, star (symbol),

OVA lingerie:

yoko-ova-lingerie, halterneck, choker, lingerie, black lingerie, o-ring, o-ring harness, criss-cross straps, criss-cross straps over midriff, black elbow gloves, fishnet thighhighs, hairband, short shorts, hair flower, alternate hairstyle, hair down, star (symbol), high heel knee boots,