You are all lucky that my intentions are not harmful -- for now at any rate! I am merely testing out my new power -- the matchless power of -- the Leap-Frog! 
Appearing in "Enter: The Leap-Frog!"
Daredevil #25
Featured Characters:
Supporting Characters:
Antagonists:
- The Leap-Frog (First appearance)
Other Characters:
- Tri-Man (Fake Story)
- Spider-Man (Peter Parker) (Mentioned)
- Ka-Zar (Kevin Plunder) (Mentioned)
Races and Species:
Locations:
Items:
- Daredevil's Suit and Billy Club
- Leap-Frog's Suit (First appearance)
Vehicles:
- Masked Marauder's Helicopter
Synopsis for "Enter: The Leap-Frog!"
Daredevil #25
The man introduces himself as the Leap-Frog, and claims that his intentions are not harmful. He is merely testing his new power. Matthew finds the name "Leap-Frog" to be corny, but his radar sense can estimate the height of the man's leaps. He believes that the man is not harmless. A police officer has his handgun drawn and is able to shoot the Leap-Frog. But decides against it, as the man has not committed any serious crimes yet. Other police officers note that the man is approaching a "blind guy" (Matthew Murdock), and try to warn the fellow.
The Leap-Frog takes Matthew Murdock hostage, trying to convince his pursuers to give him a little breather. He has Matthew on a choke hold. The blind man can sense that the Leap-Frog is a strong man. He contemplates that the Daredevil has faces strong men before, but he can not actually fight the man before a crowd of spectators. They might realize that a sightless lawyer fights with the skill of Daredevil. An old woman is enraged that Leap-Frog is picking on a poor, helpless young man and threatens the villain with her umbrella.
Having rested for a bit, the Leap-Frog releases Matthew and escapes. He is convinced that the test of his powers has been successful, and that nothing can stop him. Matthew allows the villain to escape, figuring that the Leap-Frog is not one of his concerns. He has a much larger problem at his hands. He has to return to the Nelson and Murdock Law Office and try to explain his absence to his colleagues.
The scene shifts to the Office, where Foggy Nelson and Karen Page are conversing. The two have recently opened a letter addressed to Matt Murdock. The letter was supposedly written by Spider-Man and reports that Spidey knowns that Matt is Daredevil. They have trouble believing it. Foggy believes Matthew to be "totally blind", which would make it impossible for him to be Daredevil. He believes that the Wall-crawler was wrong about this. They also have no idea about Spider-Man's motive for writing that letter.
Meanwhile Matthew is still missing. Karen knows that Daredevil is alive, because the newspaper reported his presence in England and an adventure with Ka-Zar. But she does not know if Matthew is alive. Foggy finds Daredevil's adventures abroad to be evidence that he is not Matthew. They know that Matthew has not left United States of America. After saying this, Foggy realizes that they are not certain Matthew has not left the country. Karen is very worried. She fears that they will never hear from Matthew again, and will never know what happened to him. She can not bear the thought that he is gone forever.
At this moment, Matthew is standing outside the door of the office. He has overheard the tail-end of the conversation. His sense of hearing identifies something on Karen's voice; that she is on the verge of tears. On his way from the airport, Matthew has created a cover story for his disappearance. He fears it is a very weak excuse of an explanation, but hopes that his colleagues will believe it. He uses his keys to open the door and pretends that he does not know who is standing before him. As expected, Karen and Foggy are glad to see him safe and sound.
Karen then starts asking Matthew about his absence. Matthew claims that he had spend the last few days resting at the seashore, since he was feeling tired following his adventure at the arena. He claims that he had send Karen and Foggy a note explaining this, but the man entrusted with the note must have been unable to find them. He starts explaining what happened at the arena, and a false flashback begins.
In the flashback, Matthew is impersonating Daredevil and wearing a version Daredevil's Suit. Then the real Daredevil arrives to fight. Matthew leaves unnoticed, before anyone was able to realize they were two Daredevils present. He strippes off the suit in a back alley. The flashback ends. Matthew claims that he then wrote and send the note, before heading for a vacation. He expects Karen to believe him. But he listens to her pulse and realizes that she is suspicious about his story. Karen explains to him about Spider-Man's letter and the claims that Matthew is the real Daredevil. Karen believes that Spider-Man is trust-worthy.
Matthew is frustrated, because Spider-Man is the only person who knows about his secret identity. He decides to create a new lie and serve it to Karen and Foggy. He claims that he has a look-alike, twin brother, called Mike Murdock. He never told them about him, because Mike had asked him not to do so. Mike is a loner, a lifelong adventurer, and very secretive. He is also wild and sort of the black sheep in the family. Mike wanted his existence to stay secret, and Matthew kept that secret for years.
The entire story is met with disbelief by Foggy. He reminds Matthew that they used to be roommates throughout their college years. They were buddies and used to confide everything to each other. And Matthew never mentioned having any brothers. He finds Matthew's story too thin to belief. Matthew argues that it is more believable than the theory that Daredevil is secretly a blind man. Foggy insists on meeting Mike Murdock in person. Matthew promises to arrange a meeting, while secretly worried that his lie about a non-existing brother may get him in trouble with Foggy.
Matthew then claims that he wants to work in the office alone, to catch up with the office cases. Karen and Foggy tell him that they were about to leave anyway, and Foggy offers to escort Karen to her home. Karen informs Matthew that she has prepared braille copies of the office cases for him. Then she and Foggy exit the office. As soon as they leave, Matthew berates himself for having no idea how to further handle the story about his brother.
Matthew has no intention to actually work at the office. He quickly starts wearing Daredevil's Suit. He comments that he felt himself suffocating in his business suit. He considers Daredevil's Suit to be his actual working clothes. He starts realizing that Daredevil is a larger part of his identity. As if Daredevil was the real identity and Matthew Murdock just an acting role. He spends some time examining Daredevil's Billy Club and practicing with it. He wants to make sure that his weapon is in perfect condition. Daredevil is now ready for action, but lacks an opponent. He starts listening to radio news, hoping that they will provide him with information on the Leap-Frog.
The scene shifts to the laboratory of the Leap-Frog, who is not wearing his mask. He gloats that he is ready for the big time. He intends to make the Leap-Frog become the most famous name in the annals of crime. He is an inventor by trade, and has spent most of his life inventing novelty items for toy companies. He now invented something for himself, the super-springs that can make him invincible. He wants to reinvent himself as a master criminal, but needs a costume to match his abilities. He has secretly worked on one for weeks. He changes from his civilian clothes to the original version of the Leap-Frog's Suit. It includes a battery pack which provides his springs with electrical energy. The Leap-Frog is now ready for his first foray into crime.
It is nighttime, and the Leap-Frog bounces his way through New York City. He decides to rob the first jewelry store that appears in his path. He easily opens the locked door of the store, and starts stealing jewels. However, this action activates the store's alarm. By coincidence, a patrolling Daredevil was standing three blocks away from the jewelry store and decided to respond to the alarm.
The Leap-Frog manages to silence the alarm, but Daredevil enters the store. He attacks the Leap-Frog, but the villain effortlessly evades the attack. He is very fast when moving, and Daredevil realizes that the Leap-Frog is faster than his previous opponents. The villain also evades the next attack of Daredevil. The hero realizes that the Leap-Frog acts defensively, but has yet to make any offensive move. The Leap-Frog then starts ricocheting from wall to wall, while increasing his speed. Daredevil is too slow to grab or touch him. The Leap-Frog then breaks through a window and escapes into the night, while taunting the Daredevil.
The story skips ahead to the following morning. Foggy and Karen enter the Office to find an apparent look-alike of Matthew Murdock there. The man (Matthew in disguise) is wearing sunglasses, unusually colorful clothes, and uses fashionable language. He introduces himself as Mike Murdock, then starts mentioning his love for rock'n'roll music. Karen falls for the act immediately, while Foggy seems skeptical. Opening the radio to listen to some music, "Mike" overhears a news report: The Leap-Frog reportedly robbed a bank at 8:30 AM. Matthew/Mike wants to intervene. He claims that he just listened to his theme song and prepares to leave the Office. He briefly flirts with Karen before exiting. Karen and Foggy are now convinced that Mike Murdock is the real Daredevil. Karen finds him charming, but Foggy has taken an instant dislike to him. Foggy describes Mike as "a swaggering, swell-headed, loud-mouthed clown" and a "hip hyena".
The scene shifts to the Leap-Frog, who is escaping with his loot. He is amazed at how easy it was to rob the bank, and thinks of ways to challenge himself. Meanwhile, Daredevil has tracked him down and prepares to ambush him. He jumps "Froggy" and gets his hands around the surprised villain. Leap-Frog struggles to escape, and uses the loot as a club on Daredevil's head. A dazed Daredevil lets go of his opponent. The villain is leaping all around him and mocks him. Daredevil recovers and uses the cable from his Billy Club to ensnare the Leap-Frog. He brings the villain crashing to the ground and starts pulling him.
With the Leap-Frog immobilized, Daredevil starts repeatedly punching him in the face. The villain feigns surrender, but is actually playing possum. He kicks Daredevil's face. Daredevil starts punching him again. The Leap-Frog tries to escape by leaping away, but Daredevil kicks one of his legs and prevents him from doing so. Daredevil then delivers a knock-out punch and sends Leap-Frog flying into a nearby pool of water. Shortly after, Daredevil delivers the defeated villain to the police.
The scene shifts to the Office. Foggy and Matthew have received a written message from the Leap-Frog, asking them to defend him in court. Foggy seems against the idea, as he wants nothing to do with costumed super-villains. However, Matthew wants to take the case, claiming that he finds super-villains intriguing. The story ends.