Top 10 Hardest Nintendo Bosses

The Top Ten
1 Inner Agent 3 - Splatoon 2 Octo Expansion

Easily the hardest boss fight in a 3D Nintendo game and the hardest secret Nintendo boss. Bouldergeist has attacks that are easy to get used to once you have tried to beat him several times. Meanwhile, Inner Agent 3 can be quite unpredictable at times. Their aggressiveness and special usage test the skills of your movement and your ability to utilize surroundings to your advantage.

If you are very skilled, then you should have no problem beating them in fewer than 30 tries like me. Though, I can't imagine what they would be like on a harder difficulty.

2 The Hag 1 - Banjo-Tooie

Very difficult to pass on replay mode with 5 health! Dodging the back lasers and positioning to get the clockwork Kazooie eggs in on time is difficult but worth it.

3 Bonetail - Paper Mario: The Thousand Year Door

Bonetail is not too difficult if you have the right equipment. The difficulty is apparent because you have to battle 99 sets of enemies in a row without dying. Most likely, you'll drain your resources if the enemies beat you up really well. Other than that, the actual boss is about as difficult as Bowser from Paper Mario 64.

4 Bouldergeist - Super Mario Galaxy

Is this hard? People are crazy. The attacks are slow, a million bomb Boos spawn each time, and he's so big, you can't avoid hitting him.

Definitely the most difficult boss of all time. It is much harder than you'd think. Really impossible.

Hardest non-final, non-secret Nintendo boss.

5 Cackletta (Last Battle) - Mario and Luigi Superstar Saga Cackletta is a witch from the Beanbean Kingdom, and the main antagonist of Mario and Luigi: Superstar Saga. Her name is a pun on the word "cackle".

One of the only times a Mario boss has been hard was when I was about to pick Bouldergeist but realized one of the only reasons I was terrible against him was that I was not good at 3D Mario games, and I still kind of am.

Spend a turn healing, dodge, and then you should be good. Doing this with no heals and 1 hp, however, is a valid reason to rank this as hard as it is.

Great call for a difficulty spike!

6 Master Core - Super Smash Bros For Nintendo 3DS and Nintendo Wii U
7 Ganon - The Legend of Zelda Ocarina of Time

It took me forever to figure out how to beat him. I hated having to go through the castle every time.

8 Tabuu - Super Smash Bros Brawl

Beyond incredibly hard on Intense mode! Should be number one!

9 Chef Saltbaker - Cuphead
10 Mike Tyson - Mike Tyson's Punch-Out!!

Mike Tyson should be number one. Most of these bosses are vastly easier compared to him.

I was only able to beat him by using the Nintendo Switch Online rewind button.

Instant kills with every hit for 90 seconds.

The Contenders
11 Red - Pokemon HeartGold and SoulSilver Red is a Pokémon Trainer from Pallet Town, Kanto. He is the first character to be playable in the Pokémon series and his initial appearance is set in the Generation I main games. He has since then made various appearances in Pokémon media, including the Generation III remakes of Red, Green, Blue,... read more

This guy is number 17? Try the Battle Tree in Ultra Sun and Moon on Super Battle, and beat him!

12 Silver Fury Bowser - Super Mario 3D World + Bowser’s Fury
13 Weldar - Banjo-Tooie
14 Gyorg - The Legend of Zelda: Majoa's Mask

Why isn't he on this list? He is extremely difficult! You need to get in the water to hit him and if you don't escape from the water quickly, you lose like three hearts!

15 The Shadow Queen - Paper Mario: The Thousand Year Door

Tip: When Shadow Queen uses her hands, charge up Yoshi Kid with Mario's turn, and use the Stampede to wipe out the hands for two turns.

16 Marx Soul - Kirby Super Star Ultra
17 Void - Kirby Star Allies
18 Wally Warbles - Cuphead

Wally Warbles is extremely super hard on Expert Mode!

19 Dark Link - Zelda II: The Adventure of Link

The only reliable way to beat this fight makes you feel like a cheater, but if you try to fight him any other way, it's basically just luck-based.

20 King Dice - Cuphead
21 Shadoo - Super Paper Mario
22 Grodus - Paper Mario: The Thousand Year Door
23 Mimi; Second Fight - Super Paper Mario
24 Dr. Kahl's Robot - Cuphead
25 Bald Bull Title Defense - Punch-out Wii
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