Reddit mentions of Activision Skylanders Giants Triple Pack #1: Pop Fizz, Whirlwind, Trigger Happy

You've got everything you need to enjoy the game for now. I just want to reassure you of that. :)

For the first games, you'll want to mainly keep an eye out for the Darklight Crypt set from Spyro's Adventure. This is the hardest to find of all the expansion sets, and the figure included with it (Ghostroaster) is also very hard to find (also the magic items). I still see the other three Spyro's Adventure expansions at TRUs across my state, so I don't feel that these are rare enough to draw your attention to them.

As for the games themselves, I highly recommend that you buy the Wii U version of Swap Force (the Wii version is incredibly buggy); the Wii version of Giants (the Wii U version is buggy); and of course there's only the Wii version of Spyro's Adventure. You'll have to buy a portal with both Spyro's Adventure and Swap Force since they didn't offer a "Portal Owner's Pack" like they did Giants.

Before you get too deep into buying up the old stuff though, I highly recommend that you make a plan-of-attack. Look through which figures are packaged in triple packs, which are reposed, which have Lightcore variants, etc. You can always go to an amazon page and see what figures are grouped together quite easily. The reason I suggest doing this plan-of-attack is that you'll avoid duplicates (unless you're interested in dupes).

Answer a few questions for yourself (and your answers may change over time - mine did):

• Do you want reposes and original figures? or just reposes? or just some run of the character?
  
  
• Do you want variants? (e.g. Gnarly Tree Rex; Series 1 Dark Spyro and Series 3 Dark Spyro)
  
  
• Do you want your figures new or is used acceptable?
  
  
• Do you want every Magic Item and extra level? Do you want the variants of these?
  
  Your answers can help guide you in what you want to collect. Your plan-of-attack will help ensure that you don't get something you're not interested in.