Blackfire first appears in the Season 1, Episode 2 (according to Wikipedia) and the show itself is titled "Sisters".
While it is possible that Titan could be lit on fire, it is currently scientifically impossible for anything on Earth to set it on fire.
amadeus
Prometheus, the good titan.
Prometheus.
Prometheus
Prometheus, a Titan.
There isn't a fire in EVERY episode of The Simpsons.
The episode is from Book 3 (Fire), Episode 42, and it is called "The Headband."
"The Fire" episode 4, season 2
titan fire storm
Prometheus, a Titan.
From the Titan Prometheus