[['name', 'original publisher', 'first appearance', 'year', 'date'], ["x' hal", 'dc comics', 'the new teen titans , vol 1 , 24', '1982', 'october'], ['x - 21', 'dc comics', 'action comics , vol 1 , 333', '1966', 'february'], ['x - 24', 'dc comics', 'the new titans , vol 1 , 73', '1991', 'february'], ['x - 2 - y', 'dc comics', 'action comics , vol 1 , 344', '1966', 'december'], ['x - 5 super agent', 'quality comics', 'hit comics , vol 1 , 1', '1940', 'july'], ['x', 'quality comics', 'military comics , vol 1 , 1', '1942', 'march'], ['xadu , doctor', 'dc comics', 'adventure comics , vol 1 , 283', '1961', 'april'], ['xanna', 'gorilla comics / dc comics', 'empire , vol 1 , 1', '2000', 'may'], ['xanthi', 'dc comics', 'new titans , vol 1 , 51', '1989', 'january'], ['xardo', 'dc comics', 'action comics , vol 1 , 325', '1965', 'june'], ['xasnu', 'dc comics', 'action comics , vol 1 , 278', '1961', 'july'], ['xavier , charles', 'dc comics / marvel comics', 'dc versus marvel comics , vol 1 , 3', '1996', 'february'], ['xax (i)', 'dc comics', 'green lantern , vol 2 , 9', '1961', 'december'], ['xax (ii)', 'dc comics', '52 , vol 1 , 31', '2006', 'december'], ['x - bomb betty', 'dc comics', 'legionnaires , vol 1 , 2', '1993', 'may'], ['xebel', 'dc comics', 'aquaman , vol 1 , 11', '1963', 'september'], ['xeen arrow', 'dc comics', 'adventure comics , vol 1 , 253', '1958', 'october'], ['xenofobe', 'dc comics', 'superman , vol 1 295', '1976', 'january'], ['xeo', 'dc comics', 'detective comics , vol 1. 260', '1958', 'october'], ['xera', 'dc comics', 'legion of super - heroes , vol 3 , 32', '1987', 'march'], ['xero', 'dc comics', 'xero , vol 1 , 1', '1997', 'may'], ['xiang - fa', 'dc comics', 'green lantern , vol 3 , 19', '1991', 'december'], ['xiuhtecutli', 'dc comics', 'justice league international , vol 2 , 63', '1994', 'april'], ['xl terrestrial', 'warner bros animation', 'teen titans (tv series)', '2004', 'august 28'], ['xola aq', 'dc comics', 'adventure comics , vol 1 , 350', '1966', 'november'], ['xolotl', 'dc comics', '52 , vol 1 , 21', '2006', 'september'], ['xombi', 'milestone media', 'xombi , vol 1 , 0', '1994', 'january'], ['xotar', 'dc comics', 'brave and the bold , vol 1 , 29', '1960', 'may'], ['xov', 'dc comics', 'action comics , 242', '1958', 'july'], ['xs', 'dc comics', 'legionnaires , vol 1 , 0', '1994', 'october'], ['xylpth', 'dc comics', 'green lantern , vol 2 , 151', '1982', 'april']]
Doctor Xadu , Xasnu , And Xax (i) all made their First Appearance in 1961
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