Forgo Leon

"The specimen tagged as ID-F86, left formless and floating after a humiliating defeat, fled to Forgo Dreams to plot their next steps: create a new army of phantom beasts, then claim Leongar's body as their own. When Kirby arrived to force them out, ID-F86 had no choice but to reveal their own phantom form."

- Figurine

Forgo Leon is a boss featured in Kirby and the Forgotten Land. It is the body of Leongar possessed by the soul of Fecto Forgo.

Physical appearance
Forgo Leon’s basic appearance is identical to Leongar's, inasmuch as this boss is simply Leongar being used as Soul Forgo's vessel. Initially, Leon appears identical to how he did in the second phase of his previous boss battle, with a slight purple aura and pupiless eyes that glow with a purple light. In its second form, Leon's fur gains a purplish tint (most noticeable with the stripes on his upper arms) and the upper half of his face is obscured in a cloud of black vapor. A pair of large white eyes glow through the vapor; since they are significantly larger than Leon's own eyes, they are implied to be a manifestation of Soul Forgo.

General information
When Fecto Elfilis was destroyed by Kirby and Elfilin, Fecto Forgo's soul managed to escape to Forgo Dreams, taking Leon's body with them. There, they tore his soul from his body, shattering it into 300 fragments that they subsequently scattered throughout the dream world; they then sealed Leon in Forgo Land with the intent of using him as a new vessel for their spirit.

When Kirby and Elfilin reached Forgo Land, they attempted to restore Leon's soul, reviving the King of the beasts for a matter of seconds before Soul Forgo possess Leon's body and forces him to battle Kirby once again. When Kirby seemed to be gaining the upper hand, Forgo began to channel even more of their power into Leon, restoring his vigor and enhancing his attacks further.

After Forgo Leon's defeat, Fecto Forgo abandons Leon's body in order to transform into Soul Forgo; however, their attempt to battle Kirby further is halted by the sudden arrival of the Butterfly, who consumes them to take the form of Morpho Knight. Following Morpho Knight's defeat and Soul Forgo's subsequent escape, the Beast Pack arrives with Leon's soul fragments and uses them to restore their king to his former self.

Boss fight
At the start of the battle, Elfilin will give Kirby a Maxim Tomato and two Copy Essences (Bomb and Cutter); after a few seconds have passed, Forgo Leon will begin attacking.

First phase
His first phase is almost identical to Leongar's second phase; he fires "X" and "V"-shaped energy waves, fires a massive beam from his mouth that initially is directed at the floor but is then redirected towards Kirby and the ceiling, and drops to all fours to charge at Kirby while snapping his jaws. The only difference is that Forgo Leon takes full damage from all attacks in this phase, likely because - unlike Leongar's second phase - he has a full health bar in this battle.

Second phase
When Forgo Leon is almost defeated, Fecto Forgo will power him up and restore his health to full as the second phase begins. At this point, Forgo Leon will start using enhanced versions of the attacks from Leongar's first phase; his claw-dragging slash leaves damaging fiery trails on the floor, his two-handed fist slams (which can be used up to three times in a row) create shockwaves with lightning bolts around the edges, and his slashing combo (also capable of being used three times in succession) can be followed by a variant of his mouth laser, which is rapidly redirected towards the ceiling and sweeps back and forth at it, causing electrified rocks to drop from the ceiling (similar to one of Meta Knight's attacks).

After losing about half of his second health bar, Forgo Leon will jump to the back of the arena and begin screaming as a spectral image of Fecto Forgo is released from his body. The specter will begin charging energy as Forgo Leon releases four claw waves in succession; an "X", a pair of vertical waves, and then two horizontal waves one after the other. He'll follow up with a very fast version of his mouth laser before stopping to catch his breath; at this point, Forgo's soul will appear near Kirby and release an enormous explosion of dark energy that deals massive damage and cannot be blocked. If Kirby avoids the attack, he'll have n extended opportunity to attack the defenseless Forgo Leon; the explosion will release several stars as it dissipates, valuable if Kirby does not have a Copy Ability at this point.

Once Fecto Forgo returns to its host, Forgo Leon will resume using his second phase's attacks, with one more twist; the spectral image of Fecto Forgo will regularly appear and fire an energy orb at Kirby, which releases a shockwave when it hits the ground. This move does nothing to interrupt Leon's attacks, making dodging more difficult. Forgo Leon will also repeat his opening attack from the third phase if the battle goes on long enough.

Trivia

 * Forgo Leon's second phase appearance is similar to the special enemies that appear in Forgo Dreams and to the enemies encountered when Kirby is using Big-Rig Mouth, suggesting that those enemies are also directly possessed by Fecto Forgo.
 * Forgo Leon's battle plays out similarly to Forgo Dedede's boss fights (likely intentional, considering that both represent characters being directly controlled by Fecto Forgo). Both are enhanced versions of a boss fought earlier in the game, introduced as they futilely struggle against Forgo's control; both seem to lack a second phase initially, only to restore their health on the verge of defeat and unleash more powerful attacks; finally, both are freed of the control after their defeat and become/return to being on good terms with Kirby.