Who’s to say that these two people weren’t destined to become Trickster and Prank in every timeline of every Earth, even if a different Allen became the Flash?
Still, it’s fun to imagine that the ’90s Flash show and the current Flash show on The CW simply take place on different Earths in one multiverse.
Of course, the fact that John Wesley Shipp played Barry Allen, and not Henry Allen, in the 1990s series means that the two Flash shows don’t exist in the same continuity, so these versions of Trickster and Prank aren’t the exact same versions played the first time around by Mark Hamill and Corinne Bohrer.