Arius was a Cyrenaic presbyter and ascetic. He was not the founder of Arianism. The opposing sides in the Controversy were already well established before the dispute between Arius and Alexander. The
Imagined portrait of Arius; detail of a Cretan School icon, c. 1591, depicting the First Council of Nicaea
Greek icon of Arius getting slapped by Nicholas of Myra
Greek icon depicting Arius' death (lower half).
Constantine I burning Arian books, illustration from a book of canon law, c. 825
Arianism is a Christological doctrine that rejects the traditional notion of the Trinity, teaching that Jesus was created by God and is therefore distinct from God. It is named after its proponent Ari
Once the orthodox Trinitarians succeeded in defeating Arianism, they censored any signs that the perceived heresy left behind. This mosaic in the Basilica of Sant'Apollinare Nuovo in Ravenna has had images of the Arian king, Theoderic, and his court removed. On some columns their hands remain.
The ceiling mosaic of the Arian Baptistery, built in Ravenna by the Ostrogothic King Theodoric the Great