Who is Sosuke Aizen?
Sosuke Aizen is listed in the Bleach character guide with spoiler-safe and full-plot profile sections.
Spoiler-Safe Summary
safe readThe true mastermind behind events in Soul Society who seeks the Kings Key using the Hogyoku.
Full Plot Summary
spoilersSosuke Aizen is an antagonist character associated with Bleach. The true mastermind behind events in Soul Society who seeks the Kings Key using the Hogyoku.
Series Bleach
Role antagonist
appearances 66
First Appearance Penetrate the Center with an Enormous Bombshell?
Appearance Map
66 All appearancesAppearances link directly to the episode or movie page so character review stays tied to the guide itself.
25 Penetrate the Center with an Enormous Bombshell? Episode Mentioned 34 Tragedy of Dawn Episode Mentioned 35 Aizen Assassinated! The Darkness Which Approaches Episode Mentioned 36 Kenpachi Zaraki Approaches! Episode Mentioned 46 Authentic Records! School of Shinigami Episode Mentioned 47 The Avengers Episode Mentioned 60 Reality of the Despair, the Assassin's Dagger is Swung Episode Mentioned 61 Aizen Stands! Horrible Ambitions Episode Mentioned 62 Gather Together! Group of the Strongest Shinigami Episode Mentioned 112 The Commencement of War, Vizards and the Arrancars Episode Mentioned 114 Reunion, Ichigo and Rukia and Soul Reapers Episode Mentioned 115 Mission! The Soul Reapers Have Come Episode Mentioned 116 The Evil Eye, Aizen Returns Episode Mentioned 121 Clash! The Protector vs. The Bearer Episode Mentioned 122 Vizard! The Power of the Awakened Episode Mentioned 125 Urgent Report! Aizen's Terrifying Plan! Episode Mentioned 126 Uryu vs. Ryuken! Clash of the Parent-Child Quincys Episode Mentioned 127 Urahara's Decision, Orihime's Thoughts Episode Mentioned 136 Civil War in Hueco Mundo! Ulquiorra's Death Episode Mentioned 137 The Malicious Battle, Aizen's Trap Episode Mentioned 138 Hueco Mundo moves again! Hitsugaya vs. Yammy Episode Mentioned 143 Grimmjow Revived Episode Mentioned 144 Ishida and Chad, The Quickening of a New Power Episode Mentioned 145 The Espada Gather! Aizen's Royal Assembly Episode Mentioned 150 Oath! Back Here Alive Again Episode Mentioned 153 The Devilish Research! Szayel Aporro's Plan Episode Mentioned 154 Rukia and Kaien, the Sorrowful Reunion Episode Mentioned 162 Szayel Aporro Laughs, The Net Trapping Renji is Complete Episode Mentioned 194 Neliel's Past Episode Mentioned 203 Karakura Town Gathers! Aizen Versus the Soul Reapers Episode Mentioned 206 The Past Chapter Begins! The Truth from 110 Years Ago Episode Mentioned 208 Aizen and the Genius Boy Episode Mentioned 209 Muguruma 9th Division, Moves Out Episode Mentioned 211 Betrayal! Aizen's Secret Maneuvers Episode Mentioned 212 Rescue Hirako! Aizen vs. Urahara Episode Mentioned 215 Defend Karakura Town! Entire Appearance of the Shinigami Episode Mentioned 216 Elite! The Four Shinigami Episode Mentioned 266 Ichigo vs. Ulquiorra, Resume Episode Mentioned 270 Beginning of Despair... Ichigo, the Unreachable Blade Episode Mentioned 278 The Nightmare Returns... Revival of the Espada Episode Mentioned 279 Hirako and Aizen...the Reunion of Fate! Episode Mentioned 280 Hisagi and Tosen, the Moment of Parting Episode Mentioned 281 Crown of Lies, Baraggan's Grudge Episode Mentioned 283 Starrk, the Lone Battle Episode Mentioned 284 Chain of Sacrifice, Halibel's Past Episode Mentioned 285 The Hundred-Year Grudge! Hiyori's Revenge Episode Mentioned 288 The Final Trump Card! Ichigo, Towards the Decisive Battle Episode Mentioned 289 Byakuya vs. Kenpachi?! The Melee Commences Episode Mentioned 290 For the Sake of Justice?! The Man Who Deserted the Shinigami Episode Mentioned 291 Desperate Struggle with Aizen! Hirako, Shikai! Episode Mentioned 292 All Out War! Aizen vs. Shinigami Episode Mentioned 293 Hitsugaya, Enraged! Blade of Hatred! Episode Mentioned 294 Impossible to Attack? The Sealed Genryusai! Episode Mentioned 295 It's All a Trap... Engineered Bonds! Episode Mentioned 296 The Shocking Truth...The Mysterious Power Within Ichigo! Episode Mentioned 297 The Extending Blade?! Ichigo vs. Gin! Episode Mentioned 300 Urahara Appears! Stop Aizen! Episode Mentioned 301 Ichigo Loses His Fighting Spirit!? Gin's Expectation! Episode Mentioned 302 The Final Getsuga Tensho!? Ichigo's Training! Episode Mentioned 306 For the Sake of Protecting! Ichigo vs. Tensa Zangetsu! Episode Mentioned 307 Emergency Situation! Aizen, New Evolution! Episode Mentioned 308 Goodbye...Rangiku Episode Mentioned 309 Fierce Fighting Conclusion! Release, the Final Getsuga Tensho! Episode Mentioned 310 Ichigo's Resolution! The Price of the Fierce Battle Episode Mentioned 343 3rd Year High School Student! Dressed Up, and a New Chapter Begins! Episode Mentioned 363 Fierce Fight! Shinigami vs. XCUTION! Episode Mentioned
Character FAQ
4 quick answersWhen does Sosuke Aizen first appear?
Sosuke Aizen's first mapped appearance is Penetrate the Center with an Enormous Bombshell?.
How many appearances are mapped for Sosuke Aizen?
Sosuke Aizen currently has 66 mapped appearances in AnimeAnchor.
Can I read this without spoilers?
Yes. Start with the spoiler-safe profile, then reveal the full plot biography only when you want deeper story detail.