Chew Toy: Sonic sometimes, particularly in the Sonic 1 strips, but really picked up with Tails - though Sonic does at least (usually) care that bad things happen to them.
Continuity Nod: The comic starts out with Sonic complaining about his inability to spindash in Sonic 1. When the Sonic 2 arc rolls around, the very first thing Sonic does is try out the spindash.
At the end of Scrap Brain Zone Act 2, when Sonic finds himself on a trap door, with Eggman at the trigger behind an unbreakable glass wall, Sonic asks Eggman if he's still bitter about the critique on his Boss Arena Idiocy that he made two comics ago. He's not.
Only Sane Man: Sonic, the only voice of reason in a world full of vindictive robots and immature would-be-world conquerors. Tails takes up this role somewhat in the Sonic 2 strips.
Ping Pong Na´vetÚ: Tails goes between being the Only Sane Man to Sonic quirks (reflecting the random quirks the average player tends to have, like being addicted to the Casino Night Zone machines), or childish and unhelpful (reflecting the times his original AI was unhelpful, like the special stages).
Pragmatic Adaptation: This series has Tails continue to follow Sonic around in the Sonic & Knuckles set (whereas Tails was nowhere to be seen during the game itself), thus maintaining the style of humor and dynamic that the two had developed over the previous two sets.