The Counter Twisted Investigation, known as the CTI, is a group dedicated to investigating the Twisted in The 3rd Birthday. The CTI is led by Hunter Owen. Hyde Bohr is its chief researcher. It was founded in December 2010.
The CTI Members are the minor people who work with Aya Brea and the other main CTI members and assist them in each department. Seven of them are male and mostly from the United States while the other males and both females are from other countries.
Currently there are nine basic members each with their own specialties.
- Augustus Vassel: A Rhode Islander who used to be a medical officer in the US Air Force, he now currently is the lead designer of CTI's equipment unit.
- Keith Burrows: A Southern Californian who was in the army fresh out of high school, he now is the prison guard to CTI's Security Division.
- Edgar Nelson: Originally a member of Oregon's working class that later became a Navy SEAL, he now works as the armory clerk in CTI's Security Division.
- Jamie Denton: Originally from Indiana, Jamie worked as a programmer and linguist after excelling at Harvard and MIT, he then volunteered himself to the CTI as the leading member of the data analysis unit.
- Valerio Neglia: An Italian man that now works in the weapons design lab of CTI's equipment unit, he marks all his guns with "N.".
- Tatiana Ilizarov: A female Russian who works as a weapons designer for CTI's equipment unit, any weapons with a serial number beginning with T are known as the "Tania Series" after her nickname.
- Erich Graf: An older German male, he was a mathematician and nuclear strategist that grated from Princeton and worked at MIT, he current works at the RAND Corporation and has been studying military strategy ever since.
- Louise Brier: The other female, she was originally from France and was an evolutionary biologist, after she made a remarkable theory about the Twisted's evolution she became a part of the CTI's science and technology unit.
- José Daniel Garza: An inmate from Indiana that masterminded multiple government agency bombings, SRL tried to turn him into a Twisted but he ended up boring a similarity to Augustus Vassel and Maeda asked to keep him to use for battle simulations.
|Aya Brea - Eve Brea - Kyle Madigan|
Hyde Bohr - Thelonious Cray - Hunter Owen - Blank - Gabrielle Monsigny - Kunihiko Maeda - Emily Jefferson - Ginger - Seamus Rose
Slacker - Wad - Stinker - Snatcher - Bean - Roller - Rover - Detector - Worm - Spitter - Mudflap - Reaper - Helix - Queen
|Babel - CTI Headquarters - Club Sacrifice - Maeda's House - North Shallows Tower - Rockefeller Center - Saint Thomas Church - Spanish Harlem|
|Cheat Codes - Feats - Outfits - Overdive - Over Energy - Soundtrack - Weapons|