goinghardt:

Discourse with @reapurrr, @senpai76@pachimari-desu/@teikotheomnic about the nature of Reaper.

tl;dr: First, read it. Second, Reaper’s a mass of nanobots, and I’m sticking to it.

It would also explain the following exchanges:

Mercy: What happened to you?
Reaper: You tell me, Doc.

especially this one:

Mercy: This is not what I intended for you, Reyes.
Reaper: You knew exactly what were you doing.

Since Reaper seems to blame Mercy who is apparently a premier researcher in the field of applied nanobiology.