10 MORE Bosses Removed For Being Too Hard
5. Asgore Prime - Undertale

Though you do battle Asgore in Toby Fox's brilliantly iconic RPG Undertale, the fight was ultimately reworked from a decidedly more difficult version which Fox designed from the outset.
This alternate version of the battle would have included a special attack where Asgore's eyes flash six times in a row, after which he delivers six spear swipes, his eyes flash white, he roars, and then slams his trident down, creating a huge shockwave which players would struggle to avoid.
Fox ultimately decided to cut this version of the boss fight because he felt that Asgore's attack was simply too powerful and would make the fight too challenging for most players.
Furthermore, the full design of Asgore's giant spear wouldn't even fit on the screen, so it didn't really work logistically either - though that honestly might've been a pretty funny meta gag given the game's own gleeful penchant for breaking the fourth wall.