I've had a few father figures in my comics before...
Like Yvonne's dad Gerald. I kinda wish I did more with him because his bizarre flatness in regards to the insanity unfolding around him has a lot of comedic potential.
I also had Zephyr from a webcomic I ended up scrapping for various reasons. He was the adoptive father of the main protagonist and kind of the eccentric father figure to the general group of protagonists as well as a whole.
And finally, another surrogate father figure from my upcoming comic Tales of Phaeton, Tiberius Strix. He's the main mentor and resident Obi-Wan to the two main characters on their quest. Plus, he carries around a gigantic sword taller than he is that also functions as a bird perch.