Kolin

Kolin (コーリン) is a non-playable character acting as Gill's assistant and secretary. She first appeared in the Street Fighter III games and later returned in Street Fighter V under the name of Helen (ヘレン).

Street Fighter V
In the events of Street Fighter V, Kolin disguises herself as Helen and she was responsible for reviving the corpse of Charlie Nash using the eleventh empty vessel coming from Urien's laboratory. Both her and Urien decided to use Charlie to stop Shadaloo's plans and Bison because of his desire for revenge. When Charlie was revived and still in a weakened state, Kolin gives him the mission to take down his best friend, Guile much to his horrible shock. Later after Charlie overpowers Guile and gets one of the chess pieces. She also recruited Rashid and Juri in order to infiltrate Shadaloo's base. Urien also arrives whom she calls him as "Lord Urien" as the latter remarks them as clay dolls before he faces Charlie in a fight. After Rashid stops Urien from killing Charlie, he tells her to prove herself that Shadaloo is defeated before leaving.

Later when they regroup after their unsuccessful attempt, Kolin tells them about the solution to stop Operation C.H.A.I.N.S. and happily asks Charlie if he has killed Bison. Charlie answers no and Kolin was angered by this complaining of trying so hard to revive him and also tells him that his life was only limited and Charlie knows this and telling her he is long-dead before walking away. Kolin is last seen watching the cities' destruction as Urien wants to know the report and also walking away ddue to their plans of falling Shadaloo apart.

After the incident, Kolin informs their leader Gill about the fall of Shadaloo and Bison's defeat at the hands of Ryu. Gill stands up knowing of their plans and decides to come with him while he removes her disguise with the use of his powers and Kolin looked at Gill's face knowing of her loyalty to him.

Udon
Kolin also appears in Udon's Super Street Fighter comic book series as well as Street Fighter V: The Life and Death(s) of Charlie Nash.

Street Fighter: Resurrection
Kolin appeared in the live-action miniseries Street Fighter: Resurrection. She is portrayed by Amy Olivia Bell.