1956

Real Name: Summer Day
Nicknames: No known nicknames
Former Aliases: No known former aliases
Other Current Aliases: No other known current aliases

Status

Occupation: Former member of the Peace Corps; currently unemployed
Legal Status: Legal status unknown
Identity: Secret. Only a small group of people are aware that Summer Day is a were-hyena.
Marital Status: Single
Group Affiliation: No known group affiliation
Base of Operations: Formerly Nairobi; formerly Arizona; currently Manhattan, New York

Origin

• The character of Hyena was created by Gerry Conway and Al Milgrom. Her origin story was revealed in Firestorm (Volume 1) #4 and Firestorm (Volume 2) #13.
  

Place of Birth: Manhattan, New York City
Known Relatives: Bert Day (father); Helen Day (mother); Doreen Day (sister)
First Appearance: Firestorm (Volume 1) #4

History

Bert Day had wanted his daughter, Summer, to become a police officer – just like him. Disappointed for never having a son, he pressured Summer to engage in more masculine pursuits, such as athletics. When she became old enough, she enrolled in the police academy, but dropped out soon after. She quickly realized that law enforcement, was not the path for her. Instead, she applied her energy towards more humanitarian pursuits. She joined the Peace Corps and traveled across the world. Her missions of mercy led her to the impoverished African veldt and the war-stricken regions of Nairobi.

One evening, she found a wounded tribal warrior lying in the grass outside of her tent. She leaned in close to offer assistance, but the man turned around and bit her upon throat. The man then transformed into a tremendous were-hyena right before Summer’s eyes. The incident raised an alarm and shoulders ran outside of their tents. They killed the were-hyena with several blasts from their weapons, but it was too late for Summer – she had been cursed. Soon after, Summer transformed into a were-hyena for the very first time. Her compassion and rationality soon gave way to a predatory, primal need to right injustices. Whenever she found herself at great distress, she transformed into the Hyena.

Summer returned to the United States and attempted to reinsert herself back into her family lifestyle. As the Hyena, she began prowling the rooftops of Manhattan, searching for prey. She was mindful to seek out victims whose disposition leaned towards criminal intent. As much as she loathed criminals, she despised law enforcement even more. Her actions soon led her into conflict with New York’s newest super-hero, Firestorm. As luck would have it, one-half of Firestorm’s composite form, Ronnie Raymond, had been dating Summer’s sister, Doreen. During their first entanglement neither Firestorm nor the Hyena knew of each other’s true identity. Firestorm failed to capture the Hyena the first several times that they had fought, and the Hyena entered into a brief partnership with another of Firestorm’s foes – Multiplex.

Firestorm eventually discovered Summer Day’s diary and learned that she was in fact the Hyena. They faced each other a few more times, and Firestorm was finally able to contain her. The Day family had Summer admitted into a special medical clinic in Arizona. She spent several months at the facility struggling to overcome the bouts of stress that led towards her transformations. She worked closely with a physician named Dr. Jivan Shi. Over the course of several weeks, Summer and Jivan developed a romantic interest in one another. One evening, in the throes of a passionate embrace, Summer reverted into her Hyena identity and bit Jivan Shi. She passed the curse along to him and he eventually transformed into a were-hyena himself.

Dr. Shi and Summer relocated back to Manhattan. Shi became a resident physician at the exclusive Eastside Medical Center. He kept Summer at the hospital as a patient and the two continued to work with one another in the hopes of assuaging the symptoms of the curse. Shi’s employment at Eastside Hospital was wrought with frustration. The chief resident, Dr. Barry Gleason, was an arrogant, spiteful man and treated Shi as a second class citizen. Before long, Shi succumbed to his animal passions and began terrorizing New York as the new Hyena.

Meanwhile, Firestorm learned that Summer had returned to Manhattan. She continued to suffer from bouts of depression and was given to memory loss and sleepwalking. When Summer turned up missing one evening, Firestorm feared that the Hyena had struck again. He encountered the Hyena at Eastside hospital, but this version of the monster was Dr. Shi. Summer eventually learned that Shi was now attacking people and voluntarily transformed back into the Hyena to face him.

Unlike on prior occasions, Summer’s personality was stronger now. Instead of attempting to attack Firestorm, she actually sought to save him. Summer and Jivan began battling one another and their fight carried over to the top of the World Trade Center. Firestorm attempted to stop both of them, but accidentally turned his powers against Summer. A blast of nuclear energy struck her in the chest sending spiraling off of the top of the building. Firestorm realized his error in judgment and successfully saved her from slamming into the concrete below. While Firestorm turned his attention back towards Jivan, Summer made her escape.

Characteristics

Height: (As Summer) 5'7"; (As Hyena) 6'4"
Weight: (As Summer) 123 lbs. (55.79 kg); (As Hyena) 395 lbs (179.16 kg)
Eyes: (As Summer) Blue; (As Hyena) Brown (red when feral)
Hair: Brown
Unusual Features: Summer Day is a half-man/half-animal were-hyena

Powers

Known Powers: Under moments of emotional duress, Summer Day has the ability to transform into a were-hyena. The transformation diminishes her capacity for rational intellect in favor of a more predatory, primal instinct. However, the Hyena is still capable of functioning intelligently and maintains full command of her faculties, albeit in a more hyperactive state. In most instances, the Hyena will transform back into Summer Day during moments of rest or if she is rendered unconscious. With time and practice, Summer succeeded in accentuating her natural personality within the were-hyena form. She can now prompt the transformation between her human and hyena form at will.

Known Abilities: In the form of the Hyena, Summer Day has superhuman agility and reflexes. She can leap great distances and possesses a stamina well in excess of that of normal human beings.

Strength Level: The Hyena possesses superhuman strength of an unknown range. She can easily tear through muscle tissue and other dense material with quick swipes from her claws.

Miscellaneous

Equipment: No known equipment.
Transportation: No known transportation.
Weapons: The Hyena once employed diamond tips on her fingernails, which provided greater stabbing damage on her claw attacks.

Notes

• No special notes.

Trivia

Appearances

Appearances believed to be complete

• Firestorm (Volume 1) #4
• Firestorm (Volume 1) #5
• Flash (Volume 1) #291 (2nd story)
• Flash (Volume 1) #292 (2nd story)
• Flash (Volume 1) #301 (2nd story)
• Flash (Volume 1) #302 (2nd story)
• Flash (Volume 1) #303 (2nd story)
• Flash (Volume 1) #304 (2nd story)
• Firestorm (Volume 2) #10
• Firestorm (Volume 2) #11
• Firestorm (Volume 2) #12
• Firestorm (Volume 2) #13
• Crisis on Infinite Earths #9
• Firestorm (Volume 2) #45
• Firestorm (Volume 2) #46
• Firestorm (Volume 2) #47
• Blue Devil #23

Related Articles

• Doreen Day
• Eastside Hospital
• Firestorm (Ronnie Raymond/Martin Stein)
• Hyena (Jivan Shi)
• Manhattan
• New York City
• Were-Hyena

External Links

• Hyena (Summer Day) biography page at the Unofficial Guide to the DC Universe

References

• Who's Who: The Definitive Directory of the DC Universe #10