Alex Olsen was a talented young scientist in Louisiana in the early 1900's married to a woman named Linda. Alex's assistant, Damian Ridge, was secretly in love with Linda and plotted the death of his friend. He tampered with Olsen's chemicals killing him in the explosion and dumped his body in the near by swamp. Ridge used Linda's grief to win convince her to marry him, only to one day become confronted with Alex Olsen again, now risen a humanoid pile of vegetable matter. Olsen killed Ridge but Linda did not recognize him and ran away leaving Olsen to wonder the swamps alone as a monster.
Alex Olsen was created by Bernie Wrightson
and Len Wein