Throw in the Jackal, and Gerry Conway seems to have had a theme going on.
Back when I was young and stupid and still reading Wizard, I always read their "Mort of the Month" feature, and while I disagreed with them when they took aim at intentionally ridiculous characters that were never meant to be taken seriously, I agreed with them when they took aim at absurd characters who were clearly intented to be seen as SERIOUS BUSINESS.
The more "Morts" I read, the more characters I saw from Conway's Firestorm and Justice League runs, and my God, were they terrible.
Conway has his strengths as a writer, but creating villains is not one of them.