Lysandre cuts a striking figure: tall and slender with a muscular build, pale skin, and piercing blue eyes. His most distinctive feature is his pointed orange hair, flowing seamlessly into a matching beard. He dresses sharply in a black suit featuring red lining, a fluffy gray collar, black dress shoes, and black fingerless gloves. A Mega Ring adorns his left middle finger. In the final stages of his plan, he adds orange striped glasses, a foldable brown bracer on his right hand, and a large backpack device capable of deploying wire-attached insectoid contraptions designed to harvest Pokémon energy.
Outwardly calm and respected as the leader of Lysandre Labs, he champions a vision for a better future. This persona conceals a deep-seated disillusionment born from past humanitarian efforts met with greed and ingratitude. This experience crystallized his conviction that the world's resources are insufficient for its population, leading him to conclude only a select few deserve survival. He plots the eradication of most life—human and Pokémon—to forge a utopia for the chosen. He extends this philosophy to Pokémon, believing domestication has weakened their battle instincts, viewing it as his duty to reignite their ferocity. Pragmatic and manipulative, he exploits vulnerabilities, like Alain's concern for Mairin's injured Chespie, to secure cooperation.
His background includes extensive global humanitarian work alongside his scientists and Pokémon. The avarice he witnessed during these efforts ultimately redirected his ambitions toward world destruction. He recruits Alain in Mega Evolution Special II by defeating the trainer's Charmeleon with his Pyroar, subsequently providing Alain with Charizardite X and a Key Stone. Traveling to Hoenn to study a dormant monolith linked to Mega Evolution, he accompanies Alain, Mairin, and Steven Stone. When Alain's Mega Charizard X battles Steven's Mega Metagross, Lysandre intervenes with Pyroar to stop the fight. He collaborates with Steven to activate an ancient portal using slab fragments, revealing a Giant Rock within a sky temple. Lysandre deploys scientists to analyze the rock, but chaos erupts with the arrival and Mega Evolution of Rayquaza, causing the rock to vanish. He later directs Alain to accompany Steven to Rustboro City to track the rock and takes Alain to Kalos for intensive training.
Lysandre strategically leverages key connections. He maintains a professional rapport with Steven Stone during the Hoenn expedition, utilizing the champion's Mega Evolution expertise. Alain serves dual roles as both protégé and instrument; Lysandre deliberately cultivates Alain's strength for data collection and advancing Team Flare's objectives. Scientists like Xerosic provide crucial support, analyzing phenomena such as the Giant Rock and Zygarde cores.
The Giant Rock becomes central to his scheme. After relocating it to Kalos, he integrates it into Team Flare's ultimate weapon, intending to harness its Mega Evolution-linked energy for global annihilation. This culminates during the Kalos League finals: he hijacks Prism Tower, captures Zygarde, and unleashes devastating roots upon Lumiose City. Via broadcast, he publicly declares his genocidal plan and reveals himself as Team Flare's leader. Confronting Alain atop the tower, he justifies his actions as necessary for a "beautiful world," mocking the futility of strength without purpose. He captures Ash and his Pokémon, aiming to exploit Ash's Bond Phenomenon with Greninja while holding the others hostage.
Lysandre's subsequent actions involve overseeing global Team Flare operations, capturing a second Zygarde core, and orchestrating the weapon's activation. His ultimate fate following the weapon's deployment remains unresolved.