Maggan

HP at Demonsbane Stage 1: 16,350,000,000

HP at Demonsbane Stage 2: 107,910,000,000

HP at Demonsbane Stage 3: 261,600,000,000

HP at Demonsbane Stage 4: 568,980,000,000

HP at Demonsbane Stage 5: 1,023,510,000,000

HP at Demonsbane Stage 6: 1,553,250,000,000

HP at Demonsbane Stage 7: 1,841,010,000,000

Please note that the Supreme effect increases the boss's maximum HP, so the HP values listed here may differ from those you see in-game.

Ground Pound: Maggan swings its claws toward its target two times, then strikes with its wings once.
Smite: Maggan swings its wings to its rear once, then smashes its wings toward its target once. The second hit inflicts knockdown.
Flaming Fist: Maggan spews flame from its claw toward its target. This attack hits two times.
Spin: Maggan spins three times to attack toward all angles. The third hit inflicts knockback.
Fire Absorb: Maggan pulls all users within 21 meters, then stomps. The second hit inflicts knockback.

Flying Slam: Maggan leaps toward its furthest target. This attack inflicts knockdown. To stop Maggan from moving, apply a Snare.
Pyro Fist: Maggan spews flame from its claw toward its target. This attack hits five times.
Flying Slam: Maggan leaps toward its target. This attack inflicts knockdown.