Chemically, the Scariest!
When people are asked what the most powerful spider is out there, people would automatically say the black widow. This is because people are warned about the specific spider early in life to stay away from a certain symbol that would be on the black widow's back that is shaped like a red hour glass. They spread this message out so that kids/stupid people would stay away from them since they're so popular but they're technically not the most daring. But when you ask me, the Brazilian Wandering spider has the most intersting and powerful venom. Once bitten, blood flow increases so stay away guys, or be the worst painful bonner you'll get! Yay! There are other side effects that can occur depending on the body like blood clots, muscle/tissue damage, and paralysis. Remember the Brazilian Wandering spider is a genus not a specific species so there are different kinds. And no, they're not apart of the Theraphosidae family!