For starters, he was the co-creator of ''Rockman''/''Franchise/MegaMan'' (alongside Akira Kitamura) but [[FranchiseZombie split]] from Creator/{{Capcom}} to [[StartMyOwn form his own company]] named Comcept.

Despite all the praise he deserves, he more or less had a long-term rivalry with Capcom's [[MoneyDearBoy money-driven]] marketing for the ''Mega Man'' series, and this resulted in complete disregard to his wants, culminating in ''VideoGame/{{Mega Man X}}6''-''X8'' and an altered plot to what Inafune had planned for the ''VideoGame/MegaManZero'' series. After more madness with the games and the production of ''VideoGame/MegaManLegends 3'', Inafune [[RageQuit left]] the company, which caused ''[[UpdatedRerelease Ultimate]] VideoGame/MarvelVsCapcom3'' to be what it is now, and presumably also caused the [[ScrewedByTheNetwork scrapping]] of ''Legends 3''.

Also makes a cameo at ''VideoGame/HyperdimensionNeptuniaMk2'', ''as a summon!''

Following his cameo in said game, people thought he was working [[ on a new project called]] ''[[WordSaladTitle Overwhelming Game Infinite Souls]]''. [[NamesTheSame They]] [[ were wrong.]] His real new game is called ''King of Pirates'', which ended up, sadly, being canceled.

He launched a Website/{{Kickstarter}} campaign for ''VideoGame/MightyNo9'', a SpiritualSuccessor of ''VideoGame/{{Mega Man|Classic}}'' featuring a protagonist who can use PowerCopying to [[TransformingMecha transform himself]]. The Kickstarter was successful, needless to say.

He is currently launching another Kickstarter on the development for ''VideoGame/RedAsh'', another SpiritualSuccessor, except for ''VideoGame/MegaManLegends''.

Inafune maintains a working relationship with Creator/IntiCreates, a video game company itself comprised of ex-Capcom staff, who aided in the creation of the ''VideoGame/MegaManZero'' and ''VideoGame/MegaManZX'' series, as well as ''VideoGame/MegaMan9'', ''VideoGame/MegaMan10'', and the aforementioned ''Mighty No. 9''. Their first self-published game, ''VideoGame/AzureStrikerGunvolt'', was developed with Inafune's input and had additional cross-promotion for ''Mighty No. 9'' in the form of ''Mighty Gunvolt'', a free add-on title for those who downloaded ''Azure Striker Gunvolt'' by November 28, 2014. It features [[{{Retraux}} an imitation of 8-bit graphics]] (like the ''Mega Man a'' mini-game in ''ZX Advent'') and [[EarlyBirdCameo Beck as a playable character]] alongside Gunvolt and Ekoro (of ''Gal*Gun'', another Inti Creates title).

He has recently undergone a bit of Controversey since the MightyNo9 kickstarter, however. Alongside cancelling King of Pirates, the Red Ash Kickstarter not only failed, but with the reveal that the game would be co developed by a chinese company anyway, many called Keiji Inafune a con-man. Not helped by MightyNo9's delays and marketing campaign being abysmal at best.