Dr. Ivan Mordo and The Platypus have collaborated musically for almost 20 years. When not travelling in Time or Space (or occasionally interdimensionally, but only when absolutely necessary), they have experimented with different styles of music including punk, rock, post-rock, and now psychedelia. They have accumulated a lot of musical gear over the years, the most important of which are detailed below in alphabetical order.
70s Electroharmonex Big Muff Pi
Danelectro Baritone Guitar (on loan from Bill)
Fender Acoustic Guitar
Gretsch Catalina Rock Drumkit w/ Zildjian K Constantinople and Paiste Tradtional cymbals
Synsonics Electric Guitar
Yamaha Telecaster Deluxe Copy
In general, Dr. Mordo plays drums and baritone guitar (tuned like a bass but with six strings) while The Platypus plays the guitars. Both sing, both occasionally experiment with an instrument they can barely play (harmonica, trumpet, trombone, etc), and both contribute to the keyboard parts.
Recently the 23rd Century has doubled in size with the addition of the Infamous Benny Hill and the Mysterious Mr Klaus. These gentlemen bring with them a formidable knowledge of science, and will certainly be a great help in the trying times to come.