Changes

|image = [[File:Screen shot 2011-05-31 at 3.12.45 PMSerpenoidBakufrost.png|200px]]|caption = [[HaosPyrus#Legacy|HaosPyrus]] [[TuskorSerpenoid]] featured in Series 2the series' special treatment

'''Series 2''' is a second wave of Bakugan products. It is the final wave that had 28mm Bakugan.  There have been tests made by Spin Master in this Series which resulted in a BakuFrost-like special Pearl Treatment, using the same grayish-blue accent paint regardless of the attribute, compared to the previous Pearl Bakugan which had their main attribute color as accent. This treatment was dropped in the following series. It might have been the inspiration for the later [[Frost]] treatment. Due to it being so early in Bakugan's lifespan, frequent errors were still being worked out, such as wrong G Power printed (Series 2 is the originator of the B1 830G error, which was intended to be 380G), parts installed wrong (B1 Sieges in Series 2 came with inverted feet frequently), upside-down attribute symbol applications and wrong cards provided in packs (Such as not sticking to the "one of each type" rule in the starter packs, instead having them randomised which made the starter packs unplayable and, more egregious, still mistakingly packing Series 2 Bakugan products with HSP-era Gate Cards).