Darius/Fridge

Fridge Brilliance

 * Darius Forces soundtrack sure gave odd names to the tracks, right? That is until you realize that the words correspond to the zones they play in: "A King", "B I O", "C H a N G e", "D E F end" (Zone J is not represented), "L a M' e".
 * The Darius Burst boss Dark Helios (an oarfish) transforms into the dragon from Syvalion when defeated. Sounds strange, until you find out that the oarfish could have been the inspiration for the Eastern dragon.

Fridge Horror

 * Titanic Lance is one of the hardest and largest bosses in the entire series and can take several minutes (and possibly credits) to defeat. The level picture for Zone M in Darius Gaiden shows multiple Titanic Lances. Beating one is hard enough, but the very idea that it was mass produced is terrifying.