His position just beside the building makes it so that- somehow- Hiccup doesn't notice him right away as he steps from the Terminal, with Gomamon riding on his shoulders. Of course, that might have been because he was looking in a completely opposite direction, still a bit disoriented and overwhelmed by everything that had happened during the last hour.

He's torn from his thoughts when Gomamon suddenly goes rigid, staring up at something with wide eyes, "H-Hoooly smokes..." Blinking, Hiccup turns his head to see what Gomamon is talking about, and his breath catches in his throat at the sight of BlackWarGreymon.

...That is one big Digimon.