Roshi Surprise (危うしランチさん, Ayaushi Ranchi-san; lit. "Watch Out, Lunch-san") is the fourth episode of the General Blue Saga and the forty-ninth episode in the Dragon Ball series. The episode first aired on February 4, 1987.
At the Red Ribbon Army headquarters, Red and Black are discussing the progress of their locating the Dragon Balls. Red exclaims that General Blue is supposed to be a brilliant tactician, and that he made sure the Red Ribbon Army was composed of the best minds of every conceivable industry, and yet despite that, they're still chasing Goku, a child, for the dragon balls, which he points out should have been in his possession months earlier. Black agrees with him, though Red talks back and tells him that the latter doesn't understand anything, and orders him to make sure that unlike Black, General Blue understands.
The Red Ribbon Army Blue Corps, Company B, led by Captain Dark, decide to attack Kame House. They descend upon Master Roshi. Roshi then asks about who they were before pointing out that he pays his taxes. Upon learning their identities, he then recognizes them and mentions that he's heard of them via various unflattering titles, including "jerk squad", "dirtbags", and "Red Ribbon slimeballs" (the last of which was his personal favorite). Dark then reminds Roshi that the "dirtbags" have them outnumbered and outgunned, with Roshi also quipping that he's also out-whipped upon seeing Dark's whip, and implies that Dark must use it on soldiers during training day. Dark then admits that he actually has the whip in hand to deal with enemies, not his own soldiers, before vaguely threatening Roshi to not toy with him. He then orders his men to tear Kame House apart for the Dragon Ball, with Roshi then implying that Dark is lacking in the ball department in another way. Roshi takes out most of them with ease. One soldier holds Launch at gunpoint, but Turtle comes in and rubs a leaf on her nose, allowing her to sneeze and change form. Launch then easily defeats the soldier, keeping Kame House safe.
Meanwhile, Krillin is driving the submarine, while they try to escape from General Blue. They find themselves in a cave when they come across a dead person's body dressed in pirate's clothing. This reminds them of the treasure that Master Roshi was talking about. They then follow a trail to the treasure. However, shortly afterwards, they notice the Red Ribbon Army subs arriving and proceeded to flee. Goku also expresses confusion as to why they should run away instead of talk it out with the Red Ribbon Army, but Krillin reminds Goku that they have guns and thus aren't interested in talk. General Blue then reminds his soldiers that they should view their enemy as their enemy regardless of age or gender, and only then will all five crumble when the day is over.