There were several different exclusive promos at the recent NY Comic Con.

Topps had a Star Wars Shin Hati card #0

Topps also had a promo 000 for Vee Friends, Notorious Ninja. 2215 made, but there was also a chrome variant limited to 99.

There were also at least 4 or 5 promos for Godzilla Chomp, some limited to 350 and some to 100.