Caspar, of the comics

• Unassertive one
• A timid man or boy considered childish or unassertive
• Wimpy doughboy?

The Collaborative International Dictionary Word definitions in The Collaborative International Dictionary
Milquetoast \Milquetoast\ n. [From Caspar Milquetoast, a character in a cartoon strip by H. T. Webster, The Timid Soul (1935).] a timid, unassertive man or boy fearful of confrontation and easily manipulated and dominated. Syn: sissy, pantywaist, pansy, ...

Wiktionary Word definitions in Wiktionary
a. meek, timid. n. (context pejorative English) A person of meek or timid disposition.

Douglas Harper's Etymology Dictionary Word definitions in Douglas Harper's Etymology Dictionary
"timid, meek person," 1938, from Caspar Milquetoast , character created by U.S. newspaper cartoonist H.T. Webster (1885-1952) in the strip "The Timid Soul," which ran from 1924 in the "New York World" and later the "Herald Tribune." By 1930 the name was ...

Wikipedia Word definitions in Wikipedia
Milquetoast is a noun or adjective referring to a meek or timid person. It may also refer to: Caspar Milquetoast , character from the comic strip, "The Timid Soul", by H. T. Webster. Dr. Milquetoast, character in " The Pacifist ", by A. C. Clarke. Milquetoast ...