EM is a sentient electromagnetic field, accidently created by Professor Adrian Richie. One of the Professor’s first acts after the “birth” of EM was to try and shut down the “haywire field” not realizing the field was now sentient. EM did not look kindly upon this attempt upon his life.
EM is able to control electrical devices and animate them. EM himself has no physical body but rather inhabits a host electrical device. From there he can control other devices that use electricity. So far, it has been noted that his control has a range of about 50’. EM is also able to generate an electrical stasis field.
Defeating EM is not usually a matter of beating him up, but rather a skill challenge as the players try to remove EM from whatever device he is hosting within.