In 1990's Spectacular Spider-Man #160, written by Gerry Conway with art by Sal Buscema, we're in the middle of Acts of Vengeance, the Marvel event where the villains swapped heroic enemies, in the hopes that, say, if Boomerang couldn't beat Spider-Man, maybe he could beat Hawkeye. Spoiler: no, he cannot. Anyway. Further screwing up the plan is Spider-Man getting crazy-powerful cosmic Captain Universe powers. See, Captain Universe isn't one guy - there's this powerful energy entity...thing, the Uni-Power, and it gloms onto someone who needs it for some nebulous purpose. Anyway. Dr. Doom's noticed this, and he's all about stealing cosmic powers from guys, so he's hauled TESS-1, a super-robot from the '40s, and he's sent it to fight Spider-Man. See, it was built in case guys like Captain America turned against the government - TESS stands for Total Elimination of Super-Soldiers.
What's important is that there's this robot, and Spider-Man has to punch it really hard.