A massive wormhole tears open, unleashing waves of monstrous creatures. Human weapons fail, and city after city falls as Class five behemoths crush the last line of defense. Just as all hope is lost, Dr. Leonard from the Academy of Sciences rises from the ruins and climbs into his blood-soaked mech. He becomes humanity's last hope, fighting to defend what remains of the world.
Episode 1 - Leonard Prepares Mechs for 30-Day Monster Attack
When giant monsters assault Dragonia's southeastern coast, Prof. Warren promotes a radiation-free nuclear weapon co-developed with Dr. Miles. Meanwhile, researcher Leonard shocks peers, stating current arms won't work, vowing to build advanced mechs and predicting a new attack in 30 days via his bound Savior System.
Episode 2 - Build Wanderer Mech, Tracked
Prepping for looming monster attacks, the protagonist constructs the Wanderer Mech’s main frame using a system-granted arc reactor—far sturdier than Dragonia’s top power source. He secures materials, activates the mech to learn its control modes, then finds he’s been tracked home, raising suspense.
Episode 3 - Colleagues Mock Leonard's Compact Mech
Leonard's colleagues visit to check his research, mocking his seemingly tiny mech as no match for giant monsters. Yet some spot its exceptional energy efficiency. Meanwhile, Warren brags about developing zero-radiation nuclear weapons under top physicist Miles in Beaconia.
Episode 4 - Leonard's Mech Plan Meets Doubt
Colleagues including Prof. Warren and Leonard's parents dismiss his mech-building as a waste, urging him to return to academy research. They trust nukes can defeat upcoming stronger monsters, but Leonard insists nukes are insufficient and vows to prove his mech's true power.
Episode 5 - Dr. Leonard Unveils His Advanced Mech
Derek and his assistant from Dragonia Academy visit Dr. Leonard, drawn by his groundbreaking mech design. Dr. Leonard showcases the Wanderer, a 15-meter mech fueled by an arc reactor boasting 3 million kilowatts of power—20 times that of a nuclear aircraft carrier engine. The group watches the mech’s test fire, stunned by its incredible performance.
Episode 6 - Dr. Leonard Secures Mech Legion Control
Awe-struck by Dr. Leonard's cutting-edge mech, others question its mass production feasibility. He shocks them by claiming sufficient resources let him build far stronger mechs and an entire legion. They strike a deal, with Dr. Leonard gaining full ownership and command over the future mech legion.
Episode 7 - Mech Dispute & Monster Invasion Alert
Dr. Leonard’s mech, built with rare multiverse alloys, is mocked by Warren who argues resources should go to nuke upgrades. Their heated clash is cut short by an urgent alert: monsters have attacked the southeast coast, putting Leonard’s controversial creation to the test.
Episode 8 - Beast Strikes: Mech & Nuke Race Against Time
When the Category 3 Ethon Beast arrives early, Leonard hurries to complete his mech while Warren readies nuclear weapons. Frontlines fall as forces can’t dent the beast; tensions spark between the two experts, with doubts over nukes’ effectiveness—who will turn the tide?
Episode 9 - Wanderer Mech vs. Nuke-Powered Monster
The team assumes the monster is wiped out by nuclear weapons, but is shocked when it absorbs nuclear energy to heal and counterattack. As panic spreads, Derek and his crew complete the Wanderer Mech's power-up, gearing up to confront the formidable threat.
Episode 10 - Panic Erupts: Cries for Help & Frightened Retreat
In this gripping start of *Apocalypse: I Built the Last Mech*, a sudden apocalyptic crisis sparks widespread terror. Desperate pleas for help ring out repeatedly, while a terrified voice shouts to be left alone, hinting at an unseen, menacing threat that demands the last mech's intervention.
Episode 11 - Leonard’s Mech Beats Monster
Once mocked as a senile old fool, Dr. Leonard stuns everyone when his mech Wanderer unleashes power greater than a nuke to crush an invading monster. His former critics quickly become his biggest fans, but tension spikes as the monster charges up another attack.
Episode 12 - Leonard's Mech Defies Death, Wows the Crowd
Everyone assumes Dr. Leonard dies in a high-energy direct hit, but he shocks all with his god-tier mech's energy shield and beam sword. Those who mocked him quickly become his fans, while a furious figure orders an urgent full investigation into Leonard's background.
Episode 13 - Dr. Leonard Gets Praise & Super AI Reward
Director Derek lauds Dr. Leonard's brilliant mech designs, mocking Warren's poor combat performance. After completing his first mission, Dr. Leonard is rewarded with a Super AI named Genesis, which grants him a thrilling Time Jump privilege as a welcome gift.
Episode 14 - Future Vision Sparks Wanderer Upgrade
After a 3-year time jump as a phantom, the Master witnesses Wanderer devoured by Class 4 monster Malice. Determined to prevent the coming apocalypse, he orders Genesis to map upgrade plans recommending monster bone elements—just as the Ethon Beast's body is safely returned to base.
Episode 15 - Tech Breakthrough & Espionage Unveiled
Dr. Leonard presents revolutionary osteo-steel and bio-energy mech technologies. Trent celebrates stolen intel from Dragonia, only to learn the spy is caught. With Victorea also infiltrating, a fierce race to build superior mechs ignites between nations.
Episode 16 - Victorea Forces Mech Build Ignoring Risks
Once a glorious empire, Victorea obtains Dragonia's mech data to combat monsters and reclaim its former glory. Ordered by Dorian to complete the mech in 3 days, engineers warn of fatal power core flaws and unstable co-piloting issues, but Dorian dismisses all concerns, forcing progress on the Round Table Knight and staking the empire's entire destiny.
Episode 17 - Dr. Leonard Exposes Victorea's Mech as Scrap
Dr. Leonard, knowing Victorea's foundation well, doubts their fast-built mech. He has Genesis hack into their system, finding the mech is a flawed scrap with weak armor, unstable core and impractical 20-seat cockpit. As the global live launch begins, Leonard mocks it as a farce and hints at his upgraded mech.
Episode 18 - Beast Invasion Interrupts Mech Showcase
Victorea hosts a grand ceremony to unveil its mighty Round Table Knight mech, declaring it will crush any invading beasts to safeguard the homeland. Amidst the celebration, a shocking urgent alert hits: a Class 2 Hammerhead beast has landed and is speeding toward downtown.
Episode 19 - Dorian Risks Unready Mech to Fight Beast
Dorian ignores Dr. Leonard's warnings about the undebugged mech and resolves to pilot it to intercept a Class 2 beast. As the mech struggles with slow startup and choppy movement, live stream viewers mock its poor performance, ramping up the tension of this high-stakes mission.
Episode 20 - Empire Mech Falls, Leonard Seeks Real Weapon
The empire’s mech is shattered by a beast in one hit, claiming over twenty lives including Dorian. As the monster breaches the coastline and approaches the city in 10 minutes, massive casualties loom. Dr. Leonard races to get the real weapon to turn the tide.
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