What should be my last Pokemon?

Question

Well right now I'm playing ultra sun with a team of five, right now I have an Incineroar, Decidueye, Starmie (may switch for stronger water type, drop some suggestions for that too)
A day lycanroc, and the totem vikavolt and I'm looking for a sixth member, I'm thinking a ground or ice type, well drop some suggestions.

Comments

I would recommend Hawlucha. It has good stats, boosted leveling rate, and learns strong attacks at low levels.

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Beat some **** up with kommo-o.

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get a legendary or an ultra beast, zeraora is good

Answer 1

You don't have any fighting or flying Pokemon. I recommend getting a Spearow and trading it for Hawlucha on Route 2, so your Hawlucha has boosted leveling rate. Hawlucha has good physical attack and easily learns a bunch of strong attacks.
source

Comments

And I think it has perfect IVs. Correct me if I'm wrong.

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This page implies IVs are random in USUM, but they don't really matter when hyper training exists. https://bulbapedia.bulbagarden.net/wiki/In-game_trade