Sherry Cromwell

Sherry Cromwell (シェリー＝クロムウェル) is a member of Necessarius and a talented "decoder." She has tanned skin and wears gothic lolita dresses. Her blonde hair is unkempt and according to Tsuchimikado, she has the silhouette of a lion. She is a master of Kabbalah Statue art and utilizes oil pastel or chalk to draw a spell to summon a golem she refers to as "Ellis" (エリス) Her sorcery name Intimus115, "I offer everything to my lost friend." (我が身の全ては亡き友のために)

Kazakiri Hyouka Arc
Sherry appears in Academy City with the intention of attacking a person of importance to either Academy City or the Church in order to cause a conflict, -- and eventually, war-- between the factions. During her assault, she reveals to Touma that she seeks to keep science and magic divided in order to prevent the tragedy that once befell her friend Ellis, who had been sent to the Church from Academy City for an attempt to create a magician-esper hybrid. This attempt went horribly wrong as not only did the esper participants suffer major injuries from magic, but were killed by the Knights of England as the experiment was illegal under the truce between the Science and Magic sides. Blaming both sides for letting Ellis suffer and be killed, Sherry swore revenge against them by making them suffer like she had. The incompatibility of science and magic destroyed Ellis, and Sherry believed that it was impossible to reconcile the two forces and that it would only result in terrible pain for others.

After the events in Kazakiri Kyouka Arc, she has later come to her senses and is shown to hang around Kaori and some of her friends from other branches of the church.

Abilities
Her ability allows her to summon the golem "Ellis" from any material in the surrounding area such as concrete, iron gates, wires, and more with her Kabbalah Statue art. This is done through writing out "Golem Ellis," or various other symbols on any solid surface. She can also create eyes by the same method as means of spying. As stated by Sherry, she cannot create more than one golem at a time.