Overview
Adon is a CPU character in Street Fighter. Though unplayable in the base game, he is playable in SF1++, and has made multiple playable appearances outside of SF1, including the Street Fighter Alpha Series and the SF4 Series. Adon is often considered one of the weaker characters in SF1++ due to his poor movement and offense, but he has some tricks up his sleeve that make him far from bad, such as the ability to dodge chip and unblockables and having high damage moves.
In SF1++, Adon is selected by holding 
at the title screen or VS. Screen and pressing Start.