The Splat Factory is back—this time with a twist! 12 characters from Invader Zim and AAAHH!!! Real Monsters will join Rugrats and Hey Arnold! characters in the official Nickelodeon collection. Starting November 8th at 2pm ET, it’ll be time for you to collect a new set of 12 classic characters in the upcoming public sale on Nickelodeon.xyz. Register now to be ready. Collect multiple characters to earn enough slime so you can redeem a highly coveted Invader Zim and AAAHH!!! Real Monsters mashup character.