△○□×, also known as Miwasiba (みわしいば), is an illustrator that has provided many illustrations for various producers. △○□×'s most notable works would be the cover for PONPONPON and Tsukema Tsukeru by Giga-P, and a fanmade PV for Unhappy Refrain by wowaka. They are the illustrator of V4 flower and are also a game creator, their games are Alice Mare, the LiEat series, and 1bitHeart. They also have an upcoming game that is a spin-off of 1bitHeart called '1BeatHeart'. Also, they have a manga series called 'NotEvil!'.
Unlike other producers, they have decided to keep their gender hidden. On their social medias, they have stated that they wish for people to imagine whatever gender they want, and will not give a definite answer.