Japanese Voice Actor: Mariko Suzuki
English Voice Actor: Bridget Hoffman
T-elos is a mysterious battle android similar to KOS-MOS, but unknown to most of Vector Industries. Its designs were featured in a U-TIC ship in Episode I; however, details on it were unknown back then. Note that telos is a Greek word meaning purpose, or goal; the final end of a process. This seems to tie in with her rumored function and eventual task of destroying KOS-MOS.
A few known features are that she is the diametric opposite of KOS-MOS, wearing a black suit with red and dark purple highlights to contrast KOS-MOS' white, blue and gray uniforms. Notably her uniform resembles almost exactly KOS-MOS' Ver. 4 form, the ultimate form of KOS-MOS. T-elos also has dark skin, blue eyes, and silver hair. She seems to possess a sapient personality unlike KOS-MOS' robotic personality. Her power is 4.75 times that of KOS-MOS v.3 because T-elos interfaces directly with the U.M.N., regulating the material domain data. She emits red energy instead of blue energy. She appears to rely primarily on her physical strength and energy generation, though she does have an arm blade, an energy revolver similar to KOS-MOS, and the U-TENERITAS attack located on her chest just above her heart, which opens into a quadropod structure which focuses a ball of red plasma. The T-elos project is being headed by a man named Roth Mantel, a mysterious and previously unknown scientist now working with the Federation military. Similar to KOS-MOS, T-elos' development code is TP-XX.
T-elos's energy blade is on her left hand (as in her attack 'L-Blade' compared to KOS-MOS's 'R-Blade'). In Latin, sinister and dexter originally mean left and right respectively, suggested that KOS-MOS is dexterous/skillful whilst T-elos is sinister/malicious, sometimes even downright sadistic. It could also be a reference to the left-right brain specialization, as the left brain controls the right side of the body and vice versa; namely the left brain is concerned with linear thought and structure and right with intuition and creativity. This could explain the personality differences as KOS-MOS carries out her duties with efficiency whilst T-elos seems vain, brutal and borderline sadistic.
Furthermore, another of her attacks involving a revolver identical to KOS-MOS' pistol named "Magdalene 16", is the name of the follower and (according to the Gospel of Mary Magdalene) confidante of Jesus, or "Yeshua".
While KOS-MOS possesses the soul of Mary, T-elos possesses the body of Mary. Over 80% of the body structure is based on the reanimated body of Mary Magdalene, recovered from Rennes-le-Château, and thus can be rightly described as flesh and blood. This also means that technically T-elos is a cyborg, not an android. Intending to assimilate the consciousness of KOS-MOS, the half of Mary that exists in imaginary space, and become a single whole, T-elos is instead defeated and absorbed by the awakened KOS-MOS, who then becomes a fully realized Mary.
Recently T-elos has been confirmed to appear in the spinoff game of Super Robot Wars Original Generation: Mugen no Frontier: Super Robot Wars OG Saga, which had KOS-MOS appearing as well.
Read more about this topic: List Of Antagonists In Xenosaga