¿Should I do the live streams in Spanish or English?

I'll try to summarize. Basically, I have a faceless channel with over 200k subscribers where I used to make short videos in English, but YouTube demonetized it, so I can no longer create that content. There's a really cool game related to my content and audience, and I'm embarrassed to appear on camera, so I'm going to have my brother, who speaks fluent Spanish, do the live streams.

Now, the problem is, I don't know if I should do the live streams in English or Spanish because my brother isn't fluent in English. He's super funny and entertaining, but I don't think he could be as funny in English, you know? Because there are many things he doesn't know how to say. So, what do you think? Since my audience speaks English, should I do the streams in English? Or could I do them in Spanish so my brother can make them better and more entertaining?

I suppose the audience should be the priority, but at the same time I know the videos won't be as good quality if he speaks in English, because his main language is Spanish. This is messed up.