Trueman Trueman , also known as Mr . T , is a mysterious character that appears in the fourth season of " Yu - Gi - Oh ! GX " . As the powerful and mysterious " Messenger of Darkness " who vows to destroy those who try to deduce his agenda , Trueman serves as the emissary of Nightshroud , the true mastermind behind the vicious siege . Trueman , at one point , stated that he has no real name , but he chose the name " Trueman " because he claims he always speaks the truth ( He does tend to use deceit and manipulation numerous times in non - verbal ways , however as he uses illusions to prey on victims . ) . Biography . Trueman initially appears to dispose of Honest , a Duel Spirit who disguised himself as a long - missing Obelisk Blue student , Yusuke Fujiwara , only to be stopped by Jaden Yuki . Recognizing Jaden as a threat , Trueman attempts to destroy Jaden , only to be thwarted every time and retreats , promising to return . Trueman proves a difficult opponent for Jaden each time they Duel . In the first Duel Jaden won fairly easily but came very close to losing the second . Before their third rematch multiple Trueman ( s ) appear and they assimilate together to dispatch Jaden , considering him as a threat to their agenda . Jaden nearly loses this one , but manages to win using the card " Honest " . He later revives his machination and initiates a vicious assault on Duel Academy and Domino City , absorbing people into the World of Darkness by materializing through the cards of Duelists who have felt negative emotions and assuming their form , but not before eliminating the original . Additionally , when he does this , everyone who knew the person forgets they ever existed . Among the victims were Daigo Sorano , Axel Brodie , Sartorius , Sarina , Tyranno Hassleberry , and almost the entire population of Domino City and the students of Duel Academy . Names from a list of his victims , including many characters from the first series anime and manga , all disappear from the list leaving only Seto Kaiba ' s name behind . To defeat Axel Brodie , Trueman copied the Deck and appearance of Brodie ' s father and exploits Brodie ' s negative emotions relating to an incident that nearly killed both of his parents . Many copies of Brodie later attempt to stop Jaden Yuki ' s escape from Domino City , but Jaden escapes them . However , many copies of Jaden then try to stop Jaden , but he is rescued by Sartorius . After defeating Daigo Sorano , Trueman begins to imitate both Sorano ' s Deck and appearance , enabling him to blend in with the other students of Duel Academy before finding his next victim , growing stronger with every Duel . Each individual Trueman clone was capable of doing this , and so each of them would seek out students to defeat , among them being Tyranno Hassleberry and Syrus Truesdale . He later assumes his true form once more and defeats Chazz Princeton and Alexis Rhodes . The Trueman clones observed the Duel between Yusuke Fujiwara and Atticus Rhodes as well as the Duel between Yusuke , Jaden , and Jesse Anderson . During Jaden ' s Duel with Yusuke Fujiwara , all the Trueman clones are destroyed by " Rainbow Neos " when it attacks and destroys " Clear Vicious Knight " and the portion of Nightshroud that was possessing Yusuke . Abilities . Trueman demonstrates numerous abilities during the season , the most notable being able to manifest from cards tainted with darkness , as he mentions he ' s a being of pure emotion . He can transform into different people and replicate their Decks . When he Duels against a particular person , he can manipulate the memories of his opponents in an attempt to psychologically weaken them . He has also shown the ability to teleport , create duplicates of himself , manipulate objects , and hypnotize people . Deck . Trueman plays a variety of Decks as he has the ability to manifest himself out of piles of random cards . To maintain consistency , he frequently runs " Dark Archetype " as a frontrunner – this can be considered his one consistently used card . In addition , he can copy the Decks of Duelists he defeats , and as such also uses a broad spectrum of constructed Decks .