- In Monster Hunter:
- Most of the early quests involve you gathering items to slaying monsters that are as large as you are. Then comes Yian Kut-Ku, the giant pink wall for any prospective hunter. And it only gets harder from there. In Tri, there's the Barroth.
- In Tri, the Qurupeco is a real problem for the reason it can call for backup by imitating monster calls. In High Rank, he becomes a real pain as in high rank quests he can call the Deviljho. This teaches the player to have Dung Bombs. Then there's Lagiacrus, as the Current it generates has a chance of inflicting Waterblight, which chews through your stamina. Ceadeus literally fires a torrent of water as one of its main attacks.
- Purple Ludroth in 3 Ultimate is the offline introduction to High Rank, and it makes sure to let you know what you're up against in the rank. You're dumped into a brand-new map with no available supplies except a map and a torch. Your enemy is more than just a simple Palette Swap, for it uses new attacks (both for the subspecies and for the Royal Ludroth in general) and has much higher health and attack power than any normal large monster you've fought up to this point, and you're stuck with Low Rank armor and weapons.
- Monster Hunter 4 has the mission "Advanced: Odd Ape Out", your first introduction to the unpredictable and aggressive Frenzied monsters in the form of a fight with a Congalala that's been infected with the Gore Magala's "Frenzy virus".
- Daimyo Hermitaur in 4U. It is the first monster you fight in High Rank, where the games is shaken up by putting you onto a new map, giving you some new monsters that are not palette-swaps of previous monsters (or with viruses), making you to wait for supplies, and spawning you away from the map's base camp (thus you cannot pick up the map immediately). It also has High Rank health and damage outputs, while you're still in Low Rank armor with Low Rank weapons.
- While generally any "Urgent" Quests required for advancement to the next tier of quests is intended to be this, Tetsucabra in Monster Hunter Generations deserves special mention, owing mostly to the fact that it is different compared to the previous bosses you fought (which were essentially giant versions of the animals you find wandering the stages). Additionally, Tetsucabra has much much more health and much more protected areas compared to the previous enemies you fought. At that point, you better have upgraded your weapons. While it is a returning monster, 4U had placed you against several other monsters that weren't just giant versions of standard monsters before you fought it.
- From the same game, Mizutsune and Malfestio - only to introduce the new gimmicks that the game has thrown at you (Bubble and confusion).
- Monster Hunter: World has a few examples:
- Tobi-Kadachi is used to teach you to dodge properly (with him being very fast, but having a notable startup lag in most attacks) and to pay attention when the monster's enraged (where said slow attacks are changed to have a much bigger range).
- Anjanath, an extremely aggressive fire-breathing tyrannosaur monster that, unlike the previously encountered Great Jagras and Tobi-Kadachi, will go out of its way to pursue you through zones, demonstrating the consequences of the new continuous open-world map. It's also a lot stronger than either of the aforementioned, and because it is threatening the main base in the Ancient Forest, it must be hunted before the player can move on to other regions.
- Diablos, already rather infamous in the MH community for being something of a Badass monster, makes everything you've fought up until this point look like wet noodles. It's an astonishing Lightning Bruiser with ferocity that exceeds even that of Anjanath. It can regularly wipe out half your health in one hit, and it can burrow underground to prevent you from retaliating and to sneak attack you.
- Nergigante is the first Elder Dragon you fight and an indicator of the difficulties you'll be facing fighting his brethren. It's lightning fast, capable of flying (unlike the Diablos) and its body is covered in spines that harden to prevent any effective damage. It has a divebomb attack that can kill you instantly if it hits and has a massive AOE. Worse, once you come near to killing it, it will retreat to a small area where you can't dodge its divebomb attack effectively, and it will use it more often.
- To the surprise of nobody familiar with it, Deviljho (added in the Spring Update) is an absolute nightmare. It can be found in any six-star or seven-star quest or High Rank expedition and the player fresh into High Rank won't come close to having the means to hunt it up until the very end of the game.
- Tempered Kirin, encountered at Hunter Rank 49, is hands down the hardest boss in the entire game, even moreso than Tempered Deviljho. Any player who has up until this point ignored elemental resistances and focused on a pure damage build will find their Glass Cannon character shattered very quickly. In addition, because many of its wide-reach AOE attacks are almost guaranteed one-hit kills, it is too risky to hunt in groups, so players who coasted along playing group hunts and didn't learn to solo hunt are in for a double lesson.
- The Iceborne expansion gives you the trio of Viper Tobi Kadachi, Nightshade Paolumu, and Barioth. The first two teach the player the importance of resistances in Master Rank, as their use of poison and sleep can quuckly decimate a hunters life bar. The last one is faster and more aggressive than any of the previous monsters the player has faced while also having a lot of health demonstrating to the player just how much more challenging Master Rank is.
- Redhelm Arzuros in Generations is the first Deviant unlocked, and by far the most punishing for unsuspecting players. Its quests are unlocked at a mere HR 2, which is equivalent to the 3 or 4-star village quests. Arzuros is a slow, predictable, and surprisingly frail Warm-Up Boss. This should be just a little bit tougher, right? Once you actually encounter the Redhelm and hear a different Scare Chord than usual, and then it stuns you with a roar, you know This Is Gonna Suck. Its health and attack power are on par with upper High Rank monsters, it has extremely powerful and wide-hitting claw attacks, can use a Ground Pound like Lagombi, and it's heavily armored so half your attacks will bounce off. The Deviants were designed to change the way players fight them compared to normal members of the species, and the Redhelm hammers that fact in hard.
Wake Up Call Boss / Monster Hunter