Genur.art

score_9, score_8_up, score_7_up, 1girl, solo, adult, Undyne the Undying (Undertale), long red ponytail, fish fin ears, blue skin, yellow eyes, intense, badass, athletic, cool, action pose, blue lightning spear, surrounded by blue lightning, undertale waterfall area, underground, underground waterfalls, glowing blue plants, grayish blue stone ground, red boots, jeans, black tank top, action, intense pose, fighting, spear of justice, jumping attack, cocky grin