"--And Men Shall Call Him... Ox!"
The Ox shares a prison cell with Dr. Karl Stragg, who pushes the Ox to free them. They go to Mr. Fear's secret lab, where Stragg tricks the Ox into undergoing a procedure promised to make Ox smarter. In actuality, it transfers Stragg's mind into Ox's body. Now Daredevil must face an enemy with deadly strength and cunning.
by Lee and Romita/Ray. 20 pages.
First appearance of Doctor Karl Stragg.
Reprinted in Marvel Super-Heroes (1967) #30.