The Amazing Spider-Man #126 (1973)
“The Kangaroo Bounces Back!”
Writer: Gerry Conway
Artist: Ross Andru
The Kangaroo is given powers by Jonas Harrow, but is killed while battling Spider-Man. 1st mention of The Spider-Mobile that Spider-man is building with the help of the Human Torch. In the epilogue, Harry Osborn is revealed to be the person who took the Green Goblin costume off his father’s body; he decides to become the Green Goblin.