The final gym leader is probably our balloon when we had as a kid. (Just a theory) Also, the gym trainers are named after Lego Ninjago (I only paid attention to the names in this gym because I recognized a name from the show and I love it).
Nickname theme: God of War Series
Google lens (0:00-0:20): Marina: Welcome to the Costs City Gym. Mmm... I know your face, you were in the lab with Fresno and Isaac, right? In that case, nice to meet you. My name is Marina and I'm here because recently I've been really into water-type Pokemon for a while now. It all started from an encounter I had on the beach with a legendary Pokemon. How?, Don't you believe it? Don't worry, I know what I saw, I don't need you to believe me. Anyway, we'd better start fighting, we can't make the next applicant wait any longer.