Doom's most dangerous weapon is his intellect, which has allowed him to make significant progress in virtually all branches of science, making him one of the greatest minds in the Marvel Universe. He has extensive knowledge of all sciences, and is an expert in robotics, genetic engineering, weapons technology, bio-chemistry, and other fields.
Doctor Doom constructs numerous devices in order to defeat his foes or gain more power, including a time machine, a device to imbue people with superpowers, and numerous robots. Doom's calculating and strategic nature leads him to use "Doombots," exact mechanical replicas of the real Doctor Doom, for many missions, such as those where he may be defeated.
Doom also possesses a limited amount of magic ability, thanks to his knowledge of the mystic arts which he learned from his time with Tibetan monks and from his mother. His magical talents are limited by his lack of humility and refusal to admit that he is not a master of all arts. The alien Ovoids teach Doom the process of psionically transferring his consciousness into another nearby being, which Doom uses on several occasions, including to escape death at the hands of Terrax. Doom also uses his scientific talents to steal and replicate the power of Galactus' heralds such as the Silver Surfer on several occasions.
Doom's armor, originally designed to hide his face from the world, is both menacing and powerful. As a defensive measure, his armor is built to generate a massive electric shock, disabling anyone who might come in contact with Doom. The suit is highly resistant to damage, and has the additional defense of a force field generated by the armor. The armor's exoskeleton augments Doom's natural physical strength, granting him low level superhuman strength. The armor is self-supporting, equipped with internal stores and recycling systems for air, food, water, and energy, allowing the wearer to survive lengthy periods of exposure underwater or in outer space. For weapons, Doom utilizes blasts of energy from his gauntlets, as well as some mystical powers like the ability to cast bolts of electric energy.