Intriguing that your version of Brainiac is robotic. But then again I've met a time traveling version of my great grand-daughter who was from a variation of the future where my species had evolved to become completely inorganic.

She...attempted to force that change much sooner that it had happened historically in her timeline.

[Unconsciously, his hand goes to his cheek where there's the faintest hint of circuitry melded in, or scarring that looks like circuitry.]

I was left with several inorganic components, mostly in a section of my spine. That my infamous ancestor is already robotic in your world is fascinating. You must be from a parallel of my timeline.

[People have talked to him about barging in and focusing on the science without introducing himself and how it can come off vaguely threatening, though, so he decides to properly introduce himself. Someone from at least some version of the past is definitely going to find another Brainiac alarming.]

I am Brainiac 5, of the Legion of Superheroes, a descendant of the original Brainiac. I've fortunately chosen a very different path from...well, most of my mostly villainous ancestors.

[He adds, because it takes some of the edge of the name:]

My friends call me Brainy. You may do so as well.