Ancient Sirehound

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Ancient Sirehound
Appears in	Pikmin 4
Scientific name	Deicanis perditum
Family	Unknown
Areas	None
Caves	Cavern for a King
Dandori Challenge stages	None
Dandori Battle stages	None
Attacks	Eat, crush, ram, zap, burn, freeze Pikmin, and uses gloom

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The Ancient Sirehound is the final boss of Pikmin 4. It is a giant space dog very similar to Oatchi and Moss, speculated by Yonny and Olimar to be the ancestor of all space dogs.

While it is said to be rather gentle in most cases, Louie somehow drives it into a rampage, complicating the Rescue Corps' attempts to get the cell sample they need to reverse Oatchi's leaf tail.

The Ancient Sirehound is found on the bottom floor of the Cavern for a King.

Stats

Weight	Max. carriers	Seeds	Value	Health
N/A	N/A	N/A	N/A	9000

Strategy

The following article or section contains guides. The strategies shown are just suggestions.

Unlike previous bosses, the Ancient Sirehound has multiple health wheels which must all be depleted for it to be defeated. Its attack patterns will change with each wheel that it loses. As it has access to multiple elements, the Candypop Buds on the previous floor of the cave should be used to ensure the presence of at least Red Pikmin, Yellow Pikmin, and Ice Pikmin; the superior combat strength of Purple Pikmin is also valuable if the player has access to them. If the player has Glow Seeds remaining in their inventory they should consider the use of Glow Pikmin, which are resistant to most of the Sirehound's attacks and can stun it with a glowmob.

First phase

The Ancient Sirehound mainly attacks with a jumping slam and a charge; the former crushes Pikmin and causes stalactites to drop from the ceiling, and the latter allows it to eat Pikmin that it catches in the charge. It can also swipe at Pikmin if they're too close to it.

To fight it, the player must trick it into charging at one of the fallen stalactites, which will stun it. The player must then have 15 Pikmin, or two Purple Pikmin, grab onto its tail to flip it over and expose its belly to attack. As the Sirehound's health decreases, it will perform more jumping slams before charging.

Second phase

The Sirehound will now begin to use a spread of five bouncing snowballs akin to those of an Arctic Cannon Larva and a long-ranged ice breath attack; if it freezes Pikmin, it will follow up with a charge. While it will try to face the player when using the latter, it cannot turn very quickly and its tail can be pulled on as before. However, care should be taken in order to avoid being hit by a stray snowball. The Sirehound will use six, then seven snowballs as its health decreases, and its ice breath rotation speed increases slightly.

Starting from this phase, touching any part of the Sirehound's body other than its tail will afflict Pikmin with its current element.

Third phase

The Sirehound fights with electrical attacks in this phase. It starts the phase by spitting up three electrical spheres that generate a spread of lightning in a spinning plus shape until they are destroyed, performs an electrical dash attack, and then returns to the center of the arena and produces a set of electric fields around itself. The Sirehound cannot move while using the electric fields, providing an opportunity to attack its tail.

Starting in this phase, the Sirehound will begin to elevate its tail out of reach when not using its "center of the arena" attack. The number of electrical furballs it spits out and dashes it performs before using its electric field attack increases as it takes more damage.

Fourth phase

Changing its element again to fire, the Sirehound will begin to spit fireballs, stomp the ground to produce flaming shockwaves (which Oatchi can jump over) and spit up burning hairballs which produce further shockwaves if they are not destroyed before being hit by a shockwave. The shockwaves cannot hit anything behind the Sirehound and it cannot turn around while performing them, which can be used to get behind it and pull on its tail.

Final phase

Instead of using an element, the Sirehound starts to fly. It will lob projectiles that produce the same gloom that the Smoky Progg uses in a circular area when they land, and will also use a beam of this fog to attack in a line. Due to the previous phases using hazards, and the poisonous appearance of the boss during the phase, it is a common mistake for players to throw White Pikmin into the gloom. The player must navigate between the fog patches without being hit by the beam to get underneath the Sirehound and pull on its tail once more. At low health, it will begin to panic Pikmin with its roar and may quickly reposition itself to keep its distance from the player.

Upon losing its last health wheel, the Ancient Sirehound will be defeated and run away, leaving behind its collar and Louie. If fighting it in the Piklopedia, it will simply fall asleep, now docile.

Notes

Dalmo's Notes

“A coat that's dense and rough like a primeval forest, a stench like a wet canine, and a shockingly toasty body temperature... Clearly a dog in every sense. The long history of dogs being companions we can rely on triggers an instinctive reaction through our entire bodies! if I were left on this planet with this massive cutie, I'd be content!”

Olimar's Notes

“If we harvest mesenchymal stem cells from this gigantic canine creature and cultivate them with glow sap, the generated serum should return Oatchi's leafified tail to normal once administered. These results would indicate that 99.9 percent of the canine DNA matches Oatchi's and that the only difference between Oatchi and Moss may be the natural presence or absence of a leaf tail. If these two theories prove to be true, it would suggest the possibility that this ancient creature is a common ancestor to two canine species from vastly remote star systems. And that, perhaps, there are even more hidden secrets out there that could hint at a fascinating yet inconceivable truth the universe has yet to reveal.”

Louie's Notes

“The ultimate ride, plush and comfortable. I wish I could bring it home with me.”

Locations

• Cavern for a King: Appears as the final boss of the game, ridden by Louie.

Trivia

• The Ancient Sirehound is one of the two enemies in the Pikmin series to have sequential health meters, the other being the Waterwraith.
  • Note that while the Plasm Wraith features multiple forms, the Mysterious Life-Form is considered a separate creature from the Plasm Wraith.
• The projectile that it shoots in the final phase (and by extension the projectile of the Smoky Progg) bears a resemblance to Gloom from The Legend of Zelda: Tears of the Kingdom.
• The Ancient Sirehound has several similarities to Bowser, the main recurring antagonist of the Super Mario franchise:
  • Its attacks feature fireballs and shockwave-generating stomps, all of which are typically associated with Bowser in 3D Mario games. Additionally, the Ancient Sirehound uses an ice breath attack that circles the arena, similar to some versions of Bowser's flame breath.
  • The Ancient Sirehound's tail needs to be attacked to make it vulnerable, similar to the Bowser fights from Super Mario 64 and Super Mario Galaxy.
  • The Ancient Sirehound wears a spiked collar and features a rock-based battle theme, both of which are usual traits of Bowser.

See also

• Moss
• Oatchi
• Titan Dweevil
• Plasm Wraith