Marslings are actually lifelike Martian machines; you do not face the actual Marsling inside. They are in Astounding planet and The War of the Worlds, the latter obviously by Harold George Wells, also a companion in Astounding planet. They are armored, have 15 hearts, and have heat rays like in War of the Worlds (Ray gun, burn), study gems (Gemological study, gem steal), and drop cows (Return the bovine, stun). The actual Martians resemble large living tentacled boogers with tentacles. Contrary to Astounding planet, their pods are capable of interplanetary travel, but not interstellar travel.