Pliny is the one that’s supposed to travel, and then send you letters which range from “I saw a mountain just explode, yo” to “did you know aqueducts are like freakishly expensive” depending on whether he’s the older or the younger one.
He’s the homebody of the two. Taco Bob, on the other hand, loves to travel. The downside is that sometimes he doesn’t come back for weeks, so they’re both homebodies now.