Barnaby x Wally stories tend to zero in on a specific kind of dynamic: the tension between performative cheer and quiet vulnerability. It's a built-in trope because their core personalities set it up. Barnaby's the outgoing entertainer, always 'on,' and writers love exploring what happens when that act drops. Is he secretly exhausted? Does he feel a pressure Wally just doesn't perceive? Wally's calm, methodical nature becomes a safe space for that unraveling. He's not demanding more energy; he's just there, steady. So many fics I've read hinge on Barnaby having a bad day, retreating, and Wally just... staying. Not with grand gestures, but by quietly making tea or sitting in companionable silence until Barnaby feels real again. That contrast between Barnaby's loud love and Wally's quiet devotion is the heart of most romance plots I come across.
Another huge theme is the 'understanding beyond words' angle. Because Wally communicates so deliberately, fanfiction often gives him an almost supernatural ability to read Barnaby's real feelings behind the jokes. It flips the script on their public dynamic. The big, loud guy isn't the one who fills the silence; it's the quiet one who understands it. I've seen some amazing stories where Wally points out the specific micro-expressions Barnaby makes when he's genuinely happy versus when he's forcing it, and Barnaby is just floored that someone noticed. It creates this incredible intimacy that feels earned, not just shipped for the sake of it.
Less common but really compelling are the fics that play with artistic synergy. Barnaby's comedy is a performance, and Wally's painting is a craft. Stories that have them collaborating—Barnaby inspiring a series of joyful, colorful paintings, or Wally helping Barnaby design a more visually cohesive stage persona—add a layer of partnership that goes beyond just emotional support. They become each other's muse, and the romance blooms in that creative shared space, which feels very true to their characters.