First appearances of characters whose name contains “Nega-Man (Janus’ evil other self)”"

IssueTitleNotes
108Fantastic Four (Vol. 1)1st Appearance of Nega-Man (Janus’ evil other self); 2nd Appearance of Janus (the scientist)
108Fantastic Four (UK Edition, Vol. 1)1st Appearance of Nega-Man (Janus’ evil other self); 2nd Appearance of Janus (the scientist)