Dictionary.com/pusillanimous (etymology):

pusillanimous (pyoo-suh-LAN-uh-muhs) adjective

Lacking courage; cowardly.

Source: The American Heritage® Dictionary of the English Language, Fourth Edition
Copyright © 2000 by Houghton Mifflin Company.
Published by Houghton Mifflin Company. All rights reserved.

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adj : lacking in courage and manly strength and resolution; contemptibly fearful [syn: poor-spirited, unmanly]

Source: WordNet ® 2.0, © 2003 Princeton University

A fun and lively sounding word for such a negative character trait. Have some fun with this and be creative in selecting who or what will be pusillanimous.