The Sonic Channel commemorative illustration for October 2025 is here, featuring Knuckles the Echidna wearing his Air Necklace upgrade from Sonic Adventure 2, a very useful and often-missed item that makes underwater exploration much easier.
Anyone who has played the game probably remembers how easy it was to overlook this upgrade. I still remember struggling through the Last Story section completely unaware it even existed. Even now, some players continue to discover it for the first time, which is both surprising and funny.
Sonic Adventure 2 first released on the SEGA Dreamcast in 2001 before being ported to the Nintendo GameCube later that same year in Japan, making the classic adventure 24 years old as of June 2025.
Now, back to the present. Here’s the translated caption from Sonic Channel along with the full illustration below.
We’ve released the commemorative illustration for October 2025! 🎨
This time it features Knuckles from Sonic Adventure 2! 👊The level-up item “Air Necklace” is a must-have for underwater exploration! 🫧
With it, there’s no need to come up for air, and navigating even the most complex waterways is a breeze! It also helps Knuckles focus even more on treasure hunting! 💎✨
#Sonic
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Source: Sonic Channel on Twitter
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