Crisipo

Crisipo, a male, is a major character in Nanu's Revenge and Nanu's Paradise. He is Hapu's second known Pokémon. He is the mate of Fenrir.

Description
He resembles Argenta, but is golden in colour. His feathers, crest, edge of tail fin and the scales on his fin are all light golden in colour, his mask and tip of crest a darker golden colour, while his ears, eyes, and nostrils ocean green in colour. He is slightly taller than Argenta, with three claws on his front feet instead of four.

Crisipo is aggressive and haughty, easily provoked when cornered, but is generally mild-mannered. In his debut, he was frightened of Nanu and Naomi touching him at first, but seems to be able to trust them, he eventually gives in and lets them pet him. He enjoys being close to Argnenta and Fenrir, the latter of which he rarely leaves her side.

Before Nanu's Revenge
In chapter 15, Nanu has a dream from Argenta's POV, watching Crisipo get shot by a tranquiliser dart, collapsing and dying. However, it is later known that he did that on purpose to pretend he's dead, so he could escape Faba.

In chapter 21, Nanu as well as Naomi, speaks of a Pokémon, being golden in colour, saving Naomi and him from a. It was unknown whether or not to them if it was Crisipo, but Argenta confirms that it may have been him, which means he is older than Argenta.

Before Nanu's Paradise
Sometime before the events of NP, he becomes a mate to Fenrir.