Powers:

The Monarch of Menace has no super human powers; he relies on a number of gadgets.

Gadgets: The Monarch of Menace has a variety of devices including: adhesive released through his boots, poison gas emitted from his cloak, an electrified sceptre, and a hypnotic crown.

Origins:

In the earliest days of Batman's career, the Monarch of Menace represented the Dark Knight's only failure. Dressed in a fur-trimmed red robe with a purple face mask and a gaudy crown, the so-called king of crime's appearance belied his true threat. A variety of technological devices made him an impressive opponent.

Notes:

Monarch Of Menace at Batman Wiki

Monarch Of Menace at Comic Vine