The Wrecker!

Jack Kirby and Vince Colletta   This might sound strange given all the world-beating foes that Thor has faced over the decades, one of my favorites of his rogues gallery is The Wrecker. The Wrecker was a mere thug named Dirk Garthwaite, a burglar who uses a crowbar to commit his crimes, and who accidentally gets imbued with some Asgardian power during a robbery.

(Note: Apparently John Romita and John Verpoorten did some alterations on the three figures at the bottom of this cover according to the GCD.)

Jack Kirby and Vince Colletta
The Wrecker very quickly turns his influx of power to his advantage and ends up in a brutal struggle with the Son of Odin. He actually defeats Thor in their first meeting, dropping a building on him. But The Destroyer shows up and knocks The Wrecker for a loop.

Jack Kirby and Bill Everett
 The Wrecker doesn't return until many moons later. He and Thor tee off again, this time their battle reaches a conclusion and Thor does indeed emerge victorious. But it's a very hard-won victory.

When next we see The Wrecker he is not alone. He has shared his magical might with some fellow prisoners giving birth to The Wrecking Crew.  The crew consists of The Wrecker, Thunderball, Pile-Driver, and Bulldozer. The Wrecking Crew would become a Marvel baddie mainstay, debuting in the pages of The Defenders, but showing up in a multitude of Marvel Comics for many many years. They supplied the raw power for many a grouping including a later incarnation of the Masters of Evil and notably during Marvel's first Secret Wars.

Sal Buscema and Dan Green
The Wrecker has proven to be a sturdy villain.

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