Tsutomu Nakajima (ナカジマ・ツトム Nakajima Tsutomu) is the designated technician of Super GUTS (Super Global Unlimited Task Squad).
Intelligent, sarcastic and clumsy; Nakajima is also the type of person to become overly panicked or serious. He is seen to have a great relationship with all of his teammates. When stressed or angry, Nakajima likes to indulge in fried chicken.
During his youth, Nakajima's family was very poor due to his neglectful father. His father had no interest in dreams or romance and focused solely on research. This caused the young boy to develop a disdain towards the man, and would motivated him to become a scientist who would not cast aside emotion. However, Nakajima still respected his father and would later realize that he drew motivation from his father's shortcomings.
During his time at university, Nakajima met a woman called Noriko Jinbo, and the two began dating. However, Nakajima would often neglect dates with her - not too dissimilar to the behaviour of his father. The pair broke up eventually.
Ultraman Tiga: The Final Odyssey
Nakajima is the chief of a team of TPC scientists and is among the first to observe the advent of darkness from R'lyeh.
Along with the rest of Super GUTS, Nakajima had been transferred to the Mars base. He had also been promoted to the Chief of Science of Super GUTS, and is developing a new version of the Neo Maxima navigation system that would allow him to traverse space-time in order to catch up with Asuka.