The symbiote eventually escaped and found Eddie Brock, and that is when Venom was born, but it all started with Spider-Man and the Secret Wars crossover. The page, which depicts Spider-Man’s first time donning the infamous all-black suit, fetched 3.36 million at auction earlier this week, becoming the world’s most valuable page of original. Then, Reed had the Human Torch flame on and surround it with fire, proving the two inherent weaknesses of symbiotes - sound and fire. He used a Sonic Blaster and bombarded it with Sonic Waves, driving it off Spider-Man's body. Reed Richards quickly found the weaknesses of the symbiote. In Amazing Spider-Man #258 by Tom DeFalco, Ron Frenz, Josef Rubinstein, Bob Sharen and Joe Rosen, Spider-Man took his costume to the Fantastic Four, and that was when Reed Richards realized it was a symbiote alien able to control Spider-Man. However, the truth is that the symbiote wanted to be a hero and did that even while Spider-Man was sleeping. In other words, the symbiotes take the personality of the host and expand on that.
However, the one that attached itself to Spider-Man had been corrupted when it sensed Deadpool's evil side. This also showed that the symbiotes were not inherently evil and were actually a peaceful race.
