Laconic / Woody Woodpecker

Crazy cartoon woodpecker wreaks havoc on those around him, and then becomes a hero character, and back again.
Heh-heh-heh-HEH-hoh, heh-heh-heh-HEH-hoh, heh-heh-heh-HEH-hoh... unabridged version HEHEHEHEHEHEEEERRRRE

http://tvtropes.org/pmwiki/pmwiki.php/Laconic/WoodyWoodpecker