So they're pokémon, I know what those are! The ones I've seen looked way different to your two though. [Sorry Red, he's only familiar with Gen3 after meeting Brendan a few years back.

He lifts a hand up to the journal to say hello to the mons.] Hey there Pikachu and Saur... Uh, and you too! [Since he's said hi properly to the pokémon but not the trainer himself yet.] I'm Caius.