https://hero.fandom.com/wiki/Drago_(Bakugan_2023)#Trivia
Here’s what I think makes him a Pure Good:
Despite being responsible for sending the Bakugan to Earth, he did that in order to prevent Nillious from wiping out and destroying the other 5 Clans of Vestroia.
Upon the arrival on earth, he became the first Bakugan to befriend a human, therefore, creating a special bond between both Humans and Bakugan alike.
He's the exact opposite of Nillious, while Nillious believes that the Bakugan should stay in their respective Clan, Dragonoid believed that the Clans should respect each other.
His comedic moments showed him how curious he was about life on earth worked (Riding a Bicycle, Trying to enjoy earth food, even working in a fast-food place, for some reason)
While he's still taken seriously, he never darkens the story whatsoever and that doesn’t detract him from being way too admirable as he is.
When he found out about Bakugan Brawling being outlawed, He and Dan Kouzo felt remorseful and decided to fix that mistake together.
He rallied up the Bakugan and their brawling partners to fight against the rampaging Bakugan and protect the city from dangers.
He did reason with Nillious despite the latter's actions in the series.
While he did act out of control, this was only because he was brainwashed by V.
After the battle against Nillious, he freed the Bakugan from being unfairly outlawed and the humans and Bakugan can finally live in peace again.
So far, his admirable actions have proved that the Misfit Clan is a symbol of peace.
He's just like Toothless (He freed the Bakugan from Nillious' tyranny and helped them live in peace with the humans; Just like how Toothless would free the Dragons from the Red Death's tyranny)
So please, there's no reason for him to be SG, being on the HB, or being IA nor NPG, he's WAY too admirable to be on those wikis, the PG wiki would mark his own page here.