Misaka Worst

Misaka Worst are the newest lineup of Misaka Clones introduced in Toaru Majutsu no Index.

Little information is available for these new clones, but it is certain that they are created for a different purpose than their predecessors.

Compared to the first 20,001 clones of Misaka Mikoto (all clones except Full-Tuning), Misaka Worst's physical form is of a much older version of the Level 5 Electromaster; it is also pointed out by illustrator Haimura Kiyotaka that they are 2-3 centimeters taller than the original, making them much taller than the average Japanese female of her age.

Their physical features also differ to the first batch of Sisters; they have dark circles around their eyes and has orange pupils, compared to the gray pupils of the 20000 Misaka Clones and to the original's brown pupils. They no longer wear a similar hairpin as the first batch, and they do not wear Tokiwadai Middle School's uniform; instead, they wear a full-body suit.