On TV Show "Arrow", season 3 episode 18, we were introduced to a new villain Jake Simmons (Deathbolt). After his capture, they did a cross-over scene with "The Flash" with Ray and Cisco talking over the fact, that on the night the particle accelerator exploded, Jake Simmons wasn't in Central city, that so making unknown how this meta-human became one. But this was never mentioned after.

His second appearance was on "The Flash", season 1, episode 22, where he was killed by Captain Cold, like discarded.

So what exactly did happen? Did they discarded his story? How did he become a meta-human? Any cross-references with comics?