For this role I'd rather you did an impression of modern Tails or maybe Tails from the original Sonic cartoons. But if you can do a voice which sounds like a slightly older Sonic OVA Tails then that would be alright if you can manage it.

Movie bio: Tails is a child prodigy when it comes to technology. He idolizes his brother-figure, Sonic, and would do anything for him - even if it means rebuilding a killer robot. As the resurrector of Hyper Metal Sonic - "Shard" - Tails becomes a close friend of the robot and helps him bring up his confidence. But Tails never saw what Sonic did in Shard and is always prepared for his betrayal.