15 Most Influential Video Game Boss Battles Of All Time

10. The Bullet Sponge - Various

What It Did First: Increased health bars far past the expected amount.

The type of boss or mini-boss that games like Destiny and The Division are now synonymous with. 'Bullet-sponge' enemies are literally what their name implies; an entity that tends to display the same animations as their underlings, yet take hundreds upon hundreds of rounds to put down.

It's an easy way for developers to tweak difficulty without doing a whole lot more to the game's base formula; simply drag out any given encounter by forcing the player to chip away at the enemy's health for a lot longer than usual.

Originating in Perfect Dark Zero, bullet-sponge bosses aren't all that fun to fight - unless you can divide and conquer to find weak spots with friends or flanking manouveres - yet they've remained a mainstay of the industry for over a decade now.