Joseph isn't seen again in that game, and his fate is not addressed. As Kidman's true intentions become apparent, a final confrontation between the three ends with Kidman accidentally shooting Joseph, who collapses as Sebastian is forcefully transported away from the area.
Joseph in particular assists Sebastian on several occasions. The three are separated within the twisted world of STEM for the majority of the plot, only encountering each other a handful of times. detectives, Sebastian Castellanos, Juli Kidman and Joseph Oda. The first game centered around a trio of Krimson P.D.
