List of Trauma Center characters

Kousuke Tsukimori / Derek Stiles
(月森孝介 Tsukimori Kōsuke) (Age 26) Derek Stiles is the main character and a surgeon at Hope Hospital. He is just beginning to realize his potential. Interestingly, his initials are DS, obviously a reference to the system the original game was for. Stiles might also be referring to the stylus that is mainly used by the player in the game. Dr. Stiles is a laid back type of person, and didn't take his patients seriously until Angie came along. Derek is a "descendant" of the Greek god of medicine, Asclepius, and is gifted with extreme concentration, an ability referred to as the "Healing Touch." In the first two games of the series, Derek fights against the deadly G.U.I.L.T. strain of viruses. He desires to help people because his father died of an illness when he was young. In Trauma Center: Second Opinion, he becomes Dr. Weaver's patient after being infected by Kyriaki and Paraskevi after an operation on a patient.

Mira Kimishima / Nozomi Weaver (Naomi Kimishima)
(ミラ・キミシマ Mira Kimishima) (Age 29) Nozomi is introduced during the 'Z' episodes of Trauma Center: Second Opinion. Originally a doctor in Japan, her ability to use the Healing Touch made her known as the Devil Doctor because of its supernatural effect. Oddly she has the initials of NW like Derek has DS. NW is probably referring to Nintendo Wii, the only playable console for Trauma Center: Second Opinion. She lost her license in Japan before Delphi gave her a new name and had her work to help those they infected with GUILT that they wanted to use for further tests. She is playable in the 5 'Z' episodes, 4 operations during Chapter 6 and the X episodes. Her healing touch differs from Derek's, allowing her to raise a patients' vitals by receiving "Cool", "Good", or "OK" ranks in her actions. After Delphi is found and eliminated, she offers samples of immature GUILT viruses to work for Caduceus Europe in exchange for her freedom. Eventually, her real name in the North American version is revealed to be Naomi Kimishima.

Ange Tonegawa / Angela "Angie" Thompson/Blackwell
(利根川アンジュ Tonegawa Anju) (Age 21) Angie Thompson is a young nurse that works as Derek's assistant. She is part German and was raised by a very well-educated family. She may seem a bit critical at times, but she is truly trying to help Dr. Stiles work to his full potential. Angie is also a smart thinker when it comes to medical situations. She usually can keep a grip on things, but occasionally gets caught up in the moment. At the end of Trauma Center: Under The Knife, she's shown to have developed a soft spot for Derek Stiles. In the episode 'Infiltration' she is shown to have studied aikido.

Hope Hospital staff
Momoe Furumura (古村百恵 Furumura Momoe) / Mary Fulton (age 39) - The senior surgical assistant for Hope Hospital. She is a nurse whom helped Derek learn the basics of surgery. She moved away from Hope Hospital, where Angie took her place. Mary is seen later in the game, wondering if Dr. Stiles is alright after seeing footage of his operations on tape.

Shinichi Kutsukake (沓掛真一 Kutsukake Shin'ichi) / Greg Kasal (age 35) - The senior surgeon at Hope Hospital. He is very kind and cool-headed during operations. He is also infected with the Tetarti (Τετάρτη) strain of G.U.I.L.T. later in the game and tells Dr. Stiles to operate on him as his final test in becoming a true surgeon. He is the older brother of Sidney Kasal.

Iichiro Kitazaki (北崎威一郎 Kitazaki I'ichirō) / Robert Hoffman (age 62) - Dr. Hoffman was an exceptional surgeon who stopped practicing in his 40's after a problem, which is never fully explained in the games (though it hints that he failed a major operation), where it is referred to as "the accident". He's now the director of Hope Hospital. He is also gifted with the Healing Touch but seems reluctant to talk about it. After the death of Richard Anderson he becomes the head director of Caduceus USA. Later in the game, after an outbreak of G.U.I.L.T., he returns to surgery and uses his Healing Touch, which is described as being able to make his surgery amazingly quick. This implies he holds the same Healing Touch as Derek. In the last mission of Trauma Center: Second Opinion, he is operated on by Stiles and Kimishima after being infected by a stronger Savato strain.

Caduceus USA staff
Souji Kutsukake (沓掛宗二 Kutsukake Sōji) / Sidney Kasal (Age 35) - Sidney is Greg Kasal's younger brother and director of Caduceus USA. He has dedicated his life to the study of clinical medicine after his wife died of illness.

Stephen Clarks (Age 42) - Caduceus's head surgeon. He has a wife and two children, and his kind demeanor has comforted many sick patients.

Sayaka Myoujin (明神さやか Myōjin Sayaka) / Cybil Myers (Age 34) - The leading anesthesiologist at Caduceus. She was previously a policewoman. She's intelligent and very spirited. Some call her the "Iron Vixen". She was the only person in the assembly where the bomb was found who helped Derek to disarm it. She knew how because she once dated a man on the bomb squad. In Trauma Center: Second Opinion, she also states that she learned a bit about disarming bombs through an interesting conversation during her lunch break. Cybil proves to be quite a strong woman when in sticky situations. She is the first character to be infected with the Paraskevi (Παρασκευή) strain of G.U.I.L.T. later in the game while chasing after a Delphi agent who is later revealed to be Professor Blackwell and is operated on by Dr. Stiles.

Shuya Aragaki (新垣修也 Aragaki Shūya) / Victor Niguel (UTK - Age 26) (SO - Age 25) - Head of research and development. He is a genius and focuses mainly on his work and its uses. He is considered a recluse and can't stand the thought of "idiots" being near him. He is extremely narcissistic, refusing to admit defeat or mistakes, as shown when he fought the Pempti strain of GUILT. Victor often curses while assisting in operations. With the help of Dr. Stiles, he created the cure for the Tetarti (Τετάρτη) and Pempti (Πέμπτη) strains of G.U.I.L.T.

Tohgo Sakura (佐倉東吾 Sakura Tōgo) / Tyler Chase (Age 26) - A former schoolmate of Derek's. He tries to keep everyone in a good mood. He was previously known as the 'Death Doctor' before Derek talked him out of practicing euthanasia. His sister, Amy, has a rare disease also caused by GUILT.

Leslie Sears (Age 26) - One of the many nurses on staff at Caduceus. She looks after Tyler's sister, Amy.

Richard Anderson (Age c. 60) - The head director of Caduceus USA and Secretary of Health. He was an astounding politician but decided to go into medicine because of his love for it. He dies from the straining of his body from the 3 operations he had when he was infected with the Pempti strain of G.U.I.L.T. and leaves Caduceus USA in the hands of Robert Hoffman.

Members of Delphi
Adam (Age 121) - Born Erich von Raitenau in Austria in 1897, he was the head of the Delphi organization. He has been sustaining his life deep within the Delphi Headquarters situated on a boat in the Atlantic Ocean, and has been the main culprit in helping to produce the G.U.I.L.T. outbreak. Delphi believes that humans deserve the "blessing" of disease and they try to rid doctors from the world using G.U.I.L.T. After he is captured by Caduceus in Trauma Center: Second Opinion, it is revealed that Caduceus Europe preserved his body to create new treatments. After a severe G.U.I.L.T. outbreak, however, his body is finally destroyed, but not before Dr. Stiles and Dr. Kimishima being assigned to perform very dangerous surgeries on Adam in order to eradicate all of the G.U.I.L.T. strains inside his body. None of these reports were ever made public.

Professor Kenneth Blackwell (Age Unknown) - The father of Angie who left his family when Angie was only 8 years old. After discovering that Delphi wanted to use his own daughter in their G.U.I.L.T. experiments, he made a deal to join them in exchange for his family's safety. He was the creator of the seventh and final G.U.I.L.T., Savato, and ends up infected with it. After being cured by Dr. Stiles, Blackwell gives his full cooperation to Caduceus in return for saving his life.