And also wanted to "punish" Conan (and Kogoro) for trapping him, via getting Ran (almost) fatally trapped in the last one. He did it because he was a Neat Freak who considered those buildings his Old Shame.
KABOOM 3.0 MAIL BOMBER MOVIE
Subverted in Detective Conan the bomber in the first Non-Serial Movie is the architect who built all of the buildings he either blew up or nearly blew up.He's quickly eclipsed by the "serious" rivalry between Spike and Andy during the episode in question, "Cowboy Funk." Despite his fondness for teddy bears (which are there to help in his similarity to Theodore Kaczynski) he has a politically motivated reason for blowing up buildings and hates causing unnecessary collateral damage (needless to say, the "unnecessary collateral damage" part happens a lot once Spike and Andy get involved.) Cowboy Bebop has one-episode villain Teddy Bomber, who likes to hide his bombs in teddy bears that he leaves on his target site.Her powers allow her to turn anything into a bomb. With her designation as Sternritter E, "The Explode," and her Ax-Crazy personality, she has this trope in spades.
Bleach brings us Bambietta Basterbine.
She even has fond memories of the one that blew up in her face, badly scarring her and taking out her eye.