On the day of the trial, Grizzly broke into the courtroom and abducted Rawhide Kid to make it look like they are partners in crime.
Posing as students, they persuaded Mart Baker to help them by using the Hypno-Ray to turn protests into hostile activities as a cover to capture Paul Fosgrave.
Mart Baker demanded that his committee be placed in control of the university and the student body divided against each other resulting in a massive fight.
Captain America showed up at the scene and MODOK instructed Grizzly and Agent R-2 to capture Paul Fosgrave immediately.
As they brought Paul Fosgrave to the roof where their portable copter was waiting, Captain America pursued them with the help of Mart Baker (learning that he was duped by them).
Fosgrave was brought to safety, Agent R-2 was defeated, and Mart Baker and his followers were granted amnesty by the university.
Ten years later, he met with the Jackal, who gave him a grizzly bear suit and an exoskeleton harness that amplified his strength and durability.
He used this harness to attack the Daily Bugle in an attempt to get revenge against Jameson for ruining his wrestling career, but Spider-Man defeated him.
Planning only to get back at Spider-Man, Grizzly and Gibbon were shocked to see Kangaroo II and the Spot robbing a bank.
Grizzly and Gibbon later became crime-fighters and helped Spider-Man (disguised as the Bombastic Bag-Man) again to stop White Rabbit's bank robbery.
[11] He had been accused of a robbery at Madison Square Garden, but his defense was to be that he had been seen fighting Power Pack in New Jersey at the same time.
[13] Almost all of the supervillains at the wake were the victims of murder/attempted murder: the Punisher disguised himself as a barman, poisoned the drinks, and then blew up the bar.
Alyosha Kraven later began collecting a zoo of animal-themed superhumans,[14] including Bushmaster, Gargoyle, Tiger Shark, Kangaroo II, the Vatican Black Knight's Aragorn, Vulture, Mongoose, Man-Bull, Dragon Man, Swarm, Mandrill, Frog-Man and Rhino.
During this time, the Grizzly started wearing a coat that has a bear-shaped hood on it instead of his usual exoskeleton bear suit.
[20] During the "Heroic Age" storyline, Grizzly was shown as an inmate at the Raft when Hank Pym brings the students from the Avengers Academy over for a tour.
[21] Hobgoblin later gave an enhanced version of one of the Grizzly's old exoskeleton bear suits to an unnamed criminal who took on the name the Bruin in order to build his reputation.
After the misunderstanding is cleared up, Scott offers Grizzly a job at the newly established Ant-Man Security Solutions.
[27] During the "Secret Empire" storyline, Grizzly and Machinesmith join the Army of Evil during HYDRA's rise to power.
[29] Years later, G. W. Bridge, another Six Pack-member, asked Grizzly to join Weapon P.R.I.M.E., a group created to capture Cable.
Maxwell "Max" Markham wears an exoskeleton bear suit which grants him superhuman strength and durability, designed by Professor Miles Warren and later modified by the Tinkerer.
Theodore Winchester is a mutant who possesses a bear-like body with superhuman physical abilities and powerful claws and fangs.