Obtained from A Certain Magical Index III Event.
- 33% Chance to Reverse the targets' Buffs respectively (ATK/DEF/AGI)
Accelerator is one of the main characters in the science side in A Certain Magical Index, and the titular character of A Certain Scientific Accelerator. He is the most powerful esper in Academy City, ranking at the top of the seven Level 5s in the city. First appearing as an antagonist of the third light novel, he later becomes a main protagonist in the science side of the Toaru Majutsu no Index series in a notable number of volumes of the light novels.