"I can see you're in quite a lot of pain. Don't worry, I'll make it stop."
Tails—his reasoning clouded and engulfed by the negative Chaos energy—then produces his Energy Cannon, sets it to maximum charge, and aims it at Sonic as he prepares to end his suffering.
"Finally… it all comes down to this, huh Sonic? After all those years of you belittling me, never believing in me, and in the end throwing me away because I wasn't useful anymore? After everything I've done for you as a sidekick!? How ungrateful of you. But not to worry. Soon, when you're gone, I'll be the hero. And just like what you said to me, I won't need your help. Now… any last words before I vaporize you?"
-An excerpt from chapter 7 of my fanfic, A Broken Bond, which you can read here: https://www.deviantart.com/friednoodles2/art/A-Broken-Bond-chapter-7-867748219
I'll be honest, I was pretty lazy with this one. But… then again, when haven't I been?
Also, come to think of it, I suppose my decision to include Dark Tails in the story is mostly inspired by grimlock1997, with the differences being that this is separate from the Boom! universe and that this Tails needs Super Emeralds and their negative Chaos energy before being able to transform.
(and yes, backgrounds can be bothersome, this one came out pretty substandard because again, I was lazy ._.)