H,G, wells calls the experiment of the Invisible Man ‘strange’ because it was a very unusual experiment. Normally scientific experiments are carried out to improve upon the quality of life. Most of them aim at eradication of diseases, getting relief from pain, growth in production, strengthening the defence of country, exploring nature or maintaining ecological balance etc. Scientists put in untiring efforts to invent time saving machines, labour assisting devices, instruments to entertain, means to improve upon communication and transportation and the like. However, Griffin's experiment didn't have to do anything with the above mentioned goals. It was carried out solely to promote the interest of one single individual. Moreover, his strange invention, rather than proving to be a boon proved to be a bane not only for the society. Hence, his experiment a strange one.
H.G. wells also calls his experiment ‘evil’ because it didn't have anything to do with the betterment to mankind. It centered on the whims and fancies of an individual who intended to let loose a reign of terror among his fellow beings. He misused the ‘Power’ that he derived from this experiment and indulged in all wicked activities like robbing, terrorizing, injuring and murdering. Hence, wells have rightly called his experiment wicked, evil and strange.