I suppose on a scale of Blackface Offensiveness, this might rank low, as the character is meant to represent an actual Black King, and it doesn't seem like it's done mockingly.
Contrast it to early 20th century American minstrel shows, which were designed to mock, degrade, humiliate and reinforce the racial heirarchy and odious ideas regarding "eugenics".
Nonetheless, this is an awkward look in 2023, so hopefully our DEI department has a quiet word with our entire Spanish contingent about avoiding these pitfalls going forward.
The sooner this gets put to bed, the better.