Xbooru - 2010s 2015 2 girls 2girls abs alphys alphys (undertale) anthro anthro only armpits bigger female blue body blue skin blue swimsuit boots breasts chubby chubby anthro chubby female duo ear fins eye patch eyepatch female anthro female only fish fish girl glasses hair hands behind head larger female lizard lizard girl lizard tail looking at another looking at each other marine monster muscular muscular anthro muscular female non-mammal breasts official alternate costume red boots red hair reptile reptile girl reptile tail scalie sharp teeth shorter female simple background slightly chubby slit pupils smaller female smile smiling at another swimsuit tail taller female two-tone background two tone background undertale undertale (series) undyne unknown artist yellow body yellow sclera yellow skin yellow swimsuit