T.K. Takaishi, also known as Takeru Takaishi, is a character from the animated series Digimon Adventure. He is one of the main protagonists and is known for his adventurous spirit and strong bond with his partner, Patamon. T.K. is characterized by his optimistic personality and determination to protect his friends. In the series, T.K. is depicted as a young boy who becomes a DigiDestined, tasked with saving the Digital World. He is the younger brother of Matt Ishida, another key character in the series. T.K.'s journey involves personal growth, friendship, and the challenges of battling various Digimon foes.