As one of the few notable estranged fathers of the DC universe and with his daughter Raven featured as part of the main roster in Titans, it wouldn’t be all that surprising to see the world-conquering demon Trigon at some point in the series run.
Evan Logue’s character is described as a charismatic male in his late 30’s to 40’s.
Add the knowledge that Raven’s mother Arella is being cast for the series, and the dots practically connect themselves in regards to Evan Logue’s true identity.
A cult leader, Logue works towards reuniting his family, which leads us to believe he’s not in contact with them.