Papalgamate/Lucky 7/P A P P Y/sixbones is the Papyrus from HELP_tale.
Lucky 7/Papalgamate/P A P P Y is an amalgamate of several papyrus AU such as Royal Guard Papyrus, Underswap Papyrus, Babybones Papyrus, Cattale Papyrus, Underfell Papyrus, Mafiatale Papyrus, Inverted Fates Papyrus, Storyshift Papyrus, and Outertale Papyrus.
It has two forms: one as a mock phase, while the other one is the real phase.
Phase One is the time in which you choose which path you want to take: Pacifist or Genocide. In phase one, Lucky 7 appears as a deformed Papyrus made in the style of an amalgamate. Its body does not have any arms while it also seems to have sunken or melted into the floor to the knees, with a white puddle surroun. Its chest consists of a large hole that an eyeball may peek out of. Its head is in the shape of Papyrus's, however with a vertical black rectangle in the middle of its face, blocking out its eyes.
Phase two is where the battle truly begins. This time, the head from phase one extends into a more tree-like form that branch off into 6 small, bony arms, each holding a Lucky 7 head, surrounding P A P P Y while another arm extends, also half-melted, into the floor. Any head on Papalgamate may be "active" on its attack phase which is indicated by an open eye in the middle of one. The separate arm extending to the ground may also extend to the attack box during its attack phase.
The music that plays during the battle is known as $%LP &$&#!BN#TR%SL#, possibly trying to make out "HELP BONETROUSLE".
His attacks mostly consist of lasers and limbs, and can combine together and have different variants. During an attack one or more of the heads can have eyeballs that follow the player's SOUL.
His attacks are:
Laser Head: One of Papalgamate's skulls appears on the side of the battle box, as a white beam with blue or orange sections quickly erupt from it. The skull then moves downwards, moving the beam as well.
Arm Spikes: Several arms that jut out of the bottom of the screen, indicated by particles from the bottom of the Battle Box.
Arm Lunge: Papalgamate's lower-right hand slowly turns towards the player's SOUL as the arm starts reaching towards it. The arm can go out of the Battle Box as well as randomly turn and go through one side of the screen, returning on the other side. After a certain amount of movement, the arm slowly unwinds. The hand is shaky as it moves.
Arm Lunge v2: A head with an arm coming out of it that reaches for the player's SOUL. If two Arm Lunge attacks (any version) are active simultaneously and their arms come in contact with each other, both will immediately stop as a white, circular light appears in the hole of the skull. Shortly afterwards, the attack ends.
(Note: if two Arm Lunge v2 attacks are used and both of their arms come in contact with each other, both skulls will have a light in the hole.)
In order to get the pacifist ending, you must perform a set of actions until Lucky 7 can be spared in a certain way.
First off, in phase One, you must first Spare it to show Mercy, which will quickly transform it to Phase Two.
In Phase Two, you must act until you can spare him.
While fighting the Papalgamate, if a certain amount of damage is done when attacking a certain skull, the skull will fall to the ground. Once on the ground, it will be greyed out, partially visible.
Once all of the skulls have fallen down, the player can choose to "Consume" in the Mercy menu. Once done, after some dialog, the player's soul (movable) and the Papalgamate's big, dark soul (stationary) will be visible. Once the player moves their soul so that it is over the Papalgamate's soul, the bigger soul will slowly start being removed as random pieces of it vanish. As each piece vanishes, the beam of light in the background suddenly becomes thinner before attempting to become wider until the next piece vanishes, until the entire soul is consumed and the light vanishes.
Shortly after the soul is consumed, the player's soul will shake before a small, red tentacle appears, attached to their soul.