...OK. I'm going to try to walk you through this as throughly as possible. You said that because OVA Tails does not have a profile on this site, the OVA must be canon. The problem with that is that in the Sonic OVA, Sonic meets Metal Sonic for the first time. Later in that movie, becomes a good guy and melts in a volcano. But in many other Sonic games, Sonic meets Metal Sonic, who is a bad guy and is still alive. But that's impossible, right? Metal Sonic died in the volcano. That means that every game with Metal Sonic in it has to happen before the Sonic OVA. That means Sonic CD, Knuckles Chaotix, Sonic Adventure, Sonic Heroes, Sonic Rivals, Sonic Rivals 2, Sonic Generations, Sonic 4, Sonic Mania, and Sonic Forces happen before the Sonic OVA, right? But wait! That can't be right! In the Sonic OVA, Sonic meets Metal Sonic for the first time. That means only one of these can be canon. Do you think Sonic CD, Knuckles Chaotix, Sonic Adventure, Sonic Heroes, Sonic Rivals, Sonic Rivals 2, Sonic Generations, Sonic 4, Sonic Mania, and Sonic Forces are canon, or do you think the Sonic OVA is canon? Obviously the games, right? Which means the OVA can't be canon.