I just checked Bulbapedia. The first pure ice-type in the Pokedex is Castform. I understand that Castform changes types with the weather, but, technically, it is still the first pure Ice-type in the Pokedex, 10 pokemon before Snorunt. Site: http://bulbapedia.bulbagarden.net/wiki/Ice_(type)
Sableye now has a weakness, the only pokemon without one is the tynamo line with levitate. Eternamax Eternatus is now the Pokemon with the highest BST. There are other pokemon such as Xerneas who begin with X. Mega Steelix and Mega Aggron have the same defence as shuckle, so should be accepted for an answwer. There are heavier pokemon (Celesteela and cosmoem) than groudon now. Multiple other pokemon are tied with joltik for the smallest pokemon ever, so should be accepted. Wishiwashi solo form has the lowest BST. To anyone who's about to point it out, I know this quiz was made years ago, I am just providing the information so that it can easily be updated.
Cosmoem and celesteela are heavier than groudon, castform can change forms and types and it’s Pokédex number came before snorunt and xerneas also has the letter x at the beginning, not only xatu