Shouichi Makise

Shouichi Makise (ドクター中鉢, Makise Shouichi), publicly known as Dr. Nakabachi, was a scientist researching in the field of time-travelling. He is later revealed to be the father (and attempted killer) of Kurisu Makise.

Plot
The story of Steins;Gate begins with Rintarou Okabe and Mayuri Shiina attending Nakabachi's press conference about time travelling. His presentation angers Rintarou, who accuses him of plagiarizing John Titor's research. He loses his temper and yells at Rintarou, ordering him to stop. He is not seen again after that.

At the very end of the plot, Okabe, along with Suzuha Amane, time travels back to the day of the conference to prevent Kurisu's death. It is revealed that his real name was Shouichi Makise, and that he is Kurisu's father. He attempted to murder her to steal her paper on time travel. Okabe tries to stop him, but unintentionally stabs Kurisu himself.

The research documents was later saved from a plane fire by Mayuri's metal Upa, which triggered the metal detector. Knowing this, Rintarou arranges so that the Upa put into the envelope by Kurisu is a plastic one. The metal detectors does not go off and the papers got destroyed by the fire, foiling Shouichi's plan.

Though it was not mentioned, it is likely that Shouichi worked with SERN in their time-travelling research in the Alpha attractor field.

In the Beta continuity shown in Steins;Gate Zero, where Kurisu's paper did arrive to Russia, it is revealed that he's more or less kept prisoner in the country to help with research on the subject, and that the publicly revealed version of the paper is actually an inferior copy written by Nakabachi himself to poorly mimic the theory and ridicule it among scientists so as to distract the rest of the world from the actual research and from the chaos that ensues from various organizations tracking down what remains of Kurisu, in order to properly reconstruct the time machine.