The Speakermans Army returned in episode 78 right after Buzzsaw Mutant Toilet died.

When the Speakermans Army Returns

What episode is this scene from?

He pretended to lure the Titans into fighting him.

2 laser cannons, laser eyes, armour and jetpack 

Ahh... The Titan Tv-man smashed the Mecha Scientist Toilet in ep 67 part 3.

I don't know how they stole their technology... it remains a mystery.

In the final of episode 49, he is barely visible

Why the Titan Tv-man and the Titan Speakerman don't become friends?!