Living Brain sure likes waving its arms around.
Amazing Spider-Man (Vol. 1) #8
Published: c. November, 1963?
Cover Date: January, 1964
“The Terrible Threat of the Living Brain!”
Writer: Stan Lee
Artist: Steve Ditko
Inker: Steve Ditko
Letterer: Artie Simek
Still not sure why the Living Brain needed arms at all. He was designed to solve problems and answer questions, not lift heavy objects.