It depends. Grenade could potentially be part of a historical fiction story if it's placed in a historical context and used to tell a fictional tale based on real events or periods. But without more context, it's hard to say for sure.
Well, Tek Knight died in the comics due to a combination of factors. There was a conspiracy against him, and he was outnumbered in a crucial fight, leading to his tragic end.
One interesting glitch back story could be from a video game. For example, in an old racing game, there was a glitch where cars would sometimes drive through walls. It happened because of a miscalculation in the collision detection code. Programmers had to dig deep into the code to figure out how to fix it.
One scary glitch in the matrix story is about a person seeing the same stranger in completely different and unexpected places within a very short time. For example, first seeing the person in a crowded city street, then minutes later in a small, isolated alley on the other side of town as if they teleported there.
One 'glitch in the matrix' story is about a person who repeatedly saw the same stranger in different cities at the exact same time of day, always in the same pose. It was as if it was a recurring scene that wasn't supposed to be there.
There was a case where a woman entered a store she had visited many times. But this time, the layout was completely different in a way that defied logic. The aisles were in new places, and products were stocked in an entirely unrecognizable manner. It was like she had stepped into an alternate version of the store for a short while. This could potentially be seen as a glitch in the matrix.
Maybe there's a scientist character who is trying to study and understand the glitches in time. This character could be really smart and dedicated, using their knowledge to try and solve the mysteries related to the time glitches.