Giving up on his previous reluctance, Aris follows after Felicity and Maisy. He pulls himself up onto the edge of the dumpster and takes the plunge, throwing the baseball he'd been given as hard as he can at the melting mass while jumping feet-first into the mess.

It's as immediately unpleasant as he thought it might be, full of rot and trash and awful smells, but all of that's a less immediate concern than the slimy not-Niffler. And finding the linchpin. And avoiding stepping on the frozen past-Kirby. "Yeah!" he calls in agreement, already following Maisy's lead and scanning the mess for another weapon, "What she said!" If Felicity can handle that, they can handle this.