Roy first used Poké Ball to recall the Ancient Gengar, then used the Ghost Power to activate Wishing Star. A pink Dynamax Factor from within Wishing Star entered the Ancient Gengar's body through the Poké Ball.
Unlike its previous Dynamax, the Ancient Gengar inside the Poké Ball felt as if it were about to evolve, as if it were about to break through its own limits.
When the Poké Ball in Roy's hand grew to the size of a basketball, Roy threw the giant Poké Ball.
"Go, Gengar!"
A flash of red light
A large pink hand emerged from the once barren valley, reaching a height of nearly 4-5 meters. Then came a second hand, followed by the entire upper body of Gigantamax Gengar.
The Ancient Gengar's body turned white and pink, and its size increased to forty meters tall, even with only half of its body remaining.
His lower body disappeared into the shadows of another dimension, his legs and feet were no longer visible, so only half of his body appeared in the valley.
Gigantamax Gengar has a massive mouth that spans most of its body, with spiraling inwards layers of its mouth cavity leading to a dark, empty void. According to the anime and games, this passage leads directly to the afterlife, the Spirit World.
From within the enormous mouth, a thick, pinkish-purple tongue dangled from the bottom of the cavity, with most of it hanging outside the mouth, while three wisps of dark red Curse smoke swirled above the forehead.
Gigantamax Gengar appeared in a valley in the desolate mountains.
Unlike a regular Flash Gigantamax Gengar, Roy's Gigantamax Gengar has dark green tattoos all over its body, including Lickitung, which may also have green tattoos.
"Ghost~"
Gigantamax Gengar stuck out its tattooed tongue and greeted Roy and his Pokémon.
Snorunt and Dragapult stared at Gengar's gaping maw, curious about what might be inside.
It worked!!
After Gigantamax, the Ancient Gengar felt that its entire body was much taller than its previous form before it was weakened after emerging from the Ruins, but due to space limitations, it could only show its upper body.
"Marshadow, I'll be counting on you for a bit."
"Bring it on."
After consuming the last Pokéblock in his hand, Marshadow patted his chest, reassuring Roy to use his skill without worry.
Marshadow, the Shadow Guide, has now become a target for Roy's experimental skills, since ordinary skills can't hurt him anyway.
"Gengar, use G-Max Terror Marshadow!"
"Ghost!!"
A storm of Ghostly Purple energy swirled around Gigantamax Gengar, and then countless ghostly figures of different shapes emerged from Gigantamax Gengar's massive maw.
Ghostly figures filled the sky, emitting eerie laughter that sounded either manic or painful, creating an exceptionally terrifying atmosphere in this desolate mountain.
"Ghost~"
After receiving the command from Gigantamax Gengar, the ghostly figures transformed into countless black shadows that crashed into Marshadow, plunging the already dim sky into complete darkness.
However, bumping into Marshadow was no different from Tickle. If he hadn't controlled the Divine Might within his body to prevent it from overflowing, these ghostly figures wouldn't have been able to get close to him at all.
After attacking Marshadow, the ghostly figures did not dissipate; some grabbed Marshadow's legs, while others pressed down on his Marshadow.
Roy tried to use the Poké Ball in his hand to recall Marshadow, but the Poké Ball had no effect.
He deduced that it was likely triggered by the Shadow Tag effect of Gigantamax Gengar's signature move.
"That's enough, Marshadow."
Upon hearing Roy say it was okay, Marshadow simply stomped his Stomping Tantrum, sending all the ghostly figures on his body flying. Some of the smaller ghostly figures turned into ashes.
Another little imp clung tightly to his leg, but a black hand emerged from the shadows behind Marshadow and flicked the imp away with a single blow to the head.
The ghostly figures that had been blasted away wanted to rush towards Marshadow again, but they were afraid of the Divine Might emanating from Marshadow's body.
Some of the ghostly figures tried to escape, but a powerful suction force emanated from Gigantamax Gengar's mouth, pulling them back into the black hole within its mouth.
Roy then had Gigantamax Gengar try out all its other moves and discovered that many of Gigantamax Gengar's moves originated from the Abyss Maw.
Max Flare and Max Geyser both Spit Up pillars of fire and water from that huge, dark mouth.
Max Starfall Spit Up a yellow pentagram containing Fairy type energy from its giant mouth; its size is about the same as a giant meteorite that fell from the sky.
Gengar's Gigantamax only lasted for about 5 minutes before it returned to its original form.
The Ancient Gengar, having reverted to its original form, covered its mouth. Although the Gigantamax was indeed impressive, it had left its mouth a little sore.
After the Gigantamax of the Ancient Gengar ended, the patterns on the Wishing Star in Roy's hand dimmed considerably again. Roy took out a fragment that had fallen off Eternatus from his Spatial Bracelet to "Charge" it.
The moment the Wishing Star, which had become dim, came into contact with the fragment of Eternatus, a pink energy was generated from within the fragment and injected into the Wishing Star, causing the patterns on the Wishing Star to brighten again.
The Wishing Star is fully charged again, and after a cooldown period, it can be used to Dynamax your Pokémon.
Roy wasn't worried about not having enough Dynamax Factor from the Black Shard, considering that Eternatus absorbed a large amount of Galar region energy before being defeated by Giratina.
Even if this black fragment contains 0.1% of the Dynamax Factor of the entire Galar region, Roy feels that he could use up all the Dynamax Factor inside it before he dies.
"Lamp!"
"Snow!"
Seeing that the Wishing Star was fully charged, Lampent and Snorunt couldn't wait to Dynamax.
Wishing Star takes half an hour to charge each time, but can only be used for 5 minutes. This is incomparable to Mega Evolution, which can be maintained indefinitely as long as the Pokémon Trainer and Pokémon can withstand the energy consumption.
"Don't rush, we'll do it one at a time."
Roy didn't mind the trouble and waited for Wishing Star to cool down before Dynamax all his Pokémon.
After the cooling process was complete, Roy looked at the Lampent.
After capturing the Lampent into its Poké Ball Roy repeated his previous action, throwing the giant Poké Ball out of his hand.
A Lampent, scaled up to about ten meters in size, appeared in the valley, though it didn't even look as big as the mouth of the Gigantamax Gengar from before.
But that's big enough for Lampent.
The Gigantamax Lampent was initially a little unaccustomed to its enlarged body, with its two enormous iron hands waving incessantly.
For him, any change he experiences is a good thing.
Annihilape, Dragapult, Misdreavus, and Snorunt are all lining up to try Dynamax.
When Dragapult reached its maximum size, it suddenly disappeared for two seconds and then reappeared in the sky.
The Snorunt has shrunk to just over 5 meters tall, the same height as the half-extended chubby hand of the Gigantamax Gengar.
"My turn, my turn, Roy!!"
Marshadow had long been eager to try growing his body to the size of a mountain.
However, when it was Marshadow's turn, the red particles on the Wishing Star were unable to enter Marshadow's Poké Ball no matter what they tried.
It seemed like there was something terrifying inside the Poké Ball, but Roy could still clearly see the red patterns on the Wishing Star, which meant that it contained enough Dynamax Factor.
That means his Dynamax couldn't buff Marshadow.
Roy understood after a moment's thought; it was the same reason Marshadow had said that ordinary items couldn't be used on Legendary Pokémon.
No wonder Giratina was so excited when she learned that her Ghost Power could be applied to him.
Marshadow somewhat disappointed that he couldn't Dynamax; he also wanted to grow as big as a small mountain.
Roy comforted Marshadow, saying he could still transform into his Full Power Form, and that he could also control his shadow to grow larger, right?
Roy then stuffed a Pokéblock into Marshadow's mouth.
Two sentences and a Pokéblock were enough to appease Marshadow.