Both went live as special bosses in the April 25, 2025 patch, together with KING Worm. The numbers here are from the mob pages on BianKO's own site, which don't list drop rates or spawn zones.

Yellow Sand and Pidama stats (BianKO mob pages)
Boss (id)LevelHPACDamageCoinsMain drop
Yellow Sand (9011) 80 4,525,635 5,000 96 Gold Bar
Pidama (9537) 70 4,505,545 5,000 5,000 6,930 Gold Bar

Yellow Sand drops

Yellow Sand is the Ruler weapon boss. Its group list has the full Ruler of the Legend line at +1, with the three Pegasus elements (Fire, Ice, Lightning) as separate items.

Yellow Sand group drop: Ruler of the Legend weapons (all +1)
Ruler of the Legend - ...
White Tiger(+1)
Serpent(+1)
Blue Dragon(+1)
Phoenix(+1)
Pegasus(Fire)(+1)
Pegasus(Ice)(+1)
Pegasus(Lightning)(+1)

The other way to a Ruler weapon is the Ruler Box from Bowl Guards in Bowl: put it in Shozin with 1x Silver Bar for a 3% shot at a random Ruler item (6% with Shadow Piece). From Yellow Sand the weapon drops as is, no Shozin roll.

BianKO 25 April update: a flaming phoenix-shaped Ruler weapon on the ground next to a GM character
A Ruler weapon in the April 25 patch notes · Image: BianKO
Source / rights
Image / usage information: (c) BianKO / ARTY. BianKO'nun kendi sitesinde ve forumunda yayımlanan tanıtım görseli (22 Eyl 2026 indirildi); kaynak sayfa bağlantısıyla gösterilir, sahiplik iddia edilmez. · Image source ↗

Pidama drops

Pidama is the armor boss. Its group list has five +1 pieces from each of four sets and no weapons.

Pidama group drop: armor pieces (all +1)
SetPieces
Dragon Scale Dragon Scale Armor Top, Dragon Scale Armor Pants, Dragon Scale Helmet, Dragon Scale Gauntlet, Dragon Scale Boots
Mythril Mythril Pauldron, Mythril Pad, Mythril Helmet, Mythril Gauntlet, Mythril Boots
Rons Rons Robe, Rons Pants, Rons Helmet, Rons Gloves, Rons Boots
of Trial Pauldron of Trial, Pads of Trial, Helmet of Trial, Gauntlet of Trial, Boots of Trial

Shared +1 accessories

Yellow Sand and Pidama roll the same 23 accessories. Worm, Isiloon and Felankor use that list too.

The +1 accessory group shared by Yellow Sand, Pidama, Worm, Isiloon (5551) and Felankor (7035)
TypeItems (all +1)
Rings Ring of Courage, Ring of Life, Ring of Magic, Heros Valor, Legionnaire Band, Diamond Ring, Shio Tears, Imir Ring, Flame Ring
Earrings Cockatrices Earrings, Minotaurs Earrings, Lillimes Earrings, Leech Kings Earrings, Rogue Earring, Warrior Earring, Mage Earring, Cleric Earring
Amulets Amulet of Dexterity, Amulet of Strength
Belts String of Skulls, Sash of Sorrows, Belt of Dexterity, light Belt of Life

The mob database also has a second Yellow Sand (9012) at level 12 with 114 HP and no drops. The special boss is 9011.

FAQ

Where do Yellow Sand and Pidama spawn?
The site doesn't list it. Mob pages have no zone field and the April 25 notes only give the names.
Which Ruler weapons can Yellow Sand drop?
White Tiger, Serpent, Blue Dragon, Phoenix and the three Pegasus versions (Fire, Ice, Lightning), all listed at +1.
Does Pidama drop weapons?
No. Pidama's group list is only armor pieces and +1 accessories.
How far apart are their HP pools?
Barely: Yellow Sand has 4,525,635 HP and Pidama 4,505,545. Yellow Sand is listed at level 80, Pidama at level 70.

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