I – Marvel Comics

I Ian Fate Icarus Iceman Iconoclast Ice Master Icon Idunn Igron Iguana Igor Skulls Ikaris Ikthon Iktomi Ikonn Impulse Immortus Illusion Iman Illyana Rasputin Imp Imp Impossible Man Impasse Impala Impulse   Inazuma In Betweener Inali Redpath Imprint Indi Indra Indigo Inez Inheritor Inertia Inertia Inferno Infectia Infant Terrible Infinity Tap Infinitus Inger Sullivan Ink Inner Circle Female Insecticide   Insomnia Inspeector Gribbon Instant Karma Intuition Interface Integer Invisible Woman Ion Interloper Iotam Irani Rael Ion Man Irene Merriweather Irina Iris Iron Man Iron Man 2020 Iron Cross Iron Patriot Iron Moth Iron Fist Iron Fist II Iron Curtain Iron Butterfly Iron Hand Iron Jack Baker Iron Lad Iron Maiden Iron Maiden Iron Clad Iron Mask Iron Mask Isis Iskelios Isaiah Bradley   Isaac It Ivory Ixar Izanami Pvt. Izzy Cohen Innards Immortalis Illusion Inquisitor Ian McKnee Ivan Trefkov   --                Iron Cross Irezumi     Iridia Insect Man     Iceberg Infinity Incandescent Man Indra Immundra Iceman God It Inhuman Torch Ice Princess