Husybot! – Dr. Roj Sarton the ® Third.

Edit: no true fans, or dad joke no lands… Husy as is like husband but…

Both Daneel and Jander were twins. They were made to look exactly like Dr. Roj Sarton. It is the entire plot point of The Caves of Steel, and why it was so stupid that the halfwit Foundation streaming series made Daneel female. Though calling anything in that show canon related to the books is a really bad joke.