Spider-Man
Peter Parker's intellect consistently ranks among the highest in the Marvel Universe. He invented his web-shooters as a teenager using household materials, developed the sophisticated web-fluid formula, and has contributed to scientific advances alongside Reed Richards and Tony Stark. His understanding of physics, chemistry, and engineering operates at doctoral levels despite his youth.
His tactical intelligence manifests through creative problem-solving during combat. Spider-Man routinely defeats opponents with superior raw power through exploitation of environmental factors, psychological insight, and improvised technical solutions. He has outsmarted beings from Mysterio's illusions to Doctor Octopus's machinations. His quipping during combat serves dual purposes: psychological warfare against opponents and self-regulation of his own fear responses.