Justice League Action Season 1 Episode 31

When Firestorm's alter-ego, Dr. Martin Stein tells Ronnie, that Dr. Stein and Mr. Terrific were room mates in college, old rivalries resurface with Dr Stein insisting his "Smart Cubes" were superior to Mr. Terrifc's "T-Spheres". But when super-villain, the "Calculator" attacks, it's takes both technologies and both heroes,to bring him to justice.