Weddy

Weddy (ウエディ Uedi), real name Merrie Kenwood in Japanese, and Mary Kenwood in English, is a professional catburglar under the employ of L. The second daughter in the Kenwood family, Weddy is also an expert with surveillance, and installs bugs in the Yotsuba Group's meeting room to secretly eavesdrop on the group's weekly meetings. She does the same for Kyosuke Higuchi's various cars, allowing the team to watch his desperate attempts to kill Touta Matsuda. Like L and Watari, Weddy also uses an initial in her computer communication. In order to avoid confusion with Watari ("W"), she deliberately uses the lowercase form, "w". After L's death, Light writes her name into the Death Note. She dies while at Colorado on January 10th in a traffic accident. In the anime version she seems to suffer a heart attack while driving her motorcycle only crashing after already being dead (only her name is shown written in the Death Note).

She is voiced by Miki Nagasawa in the Japanese version of the anime and Venus Terzo in the English version.

According to Takeshi Obata, he drew Weddy as a female model as he did not know what kind of character she would be. Obata added that Weddy has the "stereotypical female spy look." Obata believes that if he drew Aiber and Weddy to look "a little bit more original," Ohba could have included the characters in a larger role in Death Note.

"Weddy" vs "Wedy"
Weddy's name is commonly misspelled as "Wedy". The accurate spelling of her name is, indeed, "Weddy". The proof of this fact is shown in episode 22 of the Death Note anime, during which Weddy's name is shown on a map laying out the area of her pursuit of Higuchi.

Trivia

 * In the manga, her dress is shown to be black and white, and in the style of dresses worn by female spies in the 60's/70's (if the Austin Powers franchise is to be believed). However, in the anime, the colour changes to black and red, although the style is unchanged. A similar incident happened to the converting of Matt in the anime version, in which his stripes changed from black and white to black and red.
 * Weddy, Matt, Demegawa, and Ukita are the only charachters in the series to smoke (in the anime though, the scene where Ukita smoked wasn't shown).