Aiden is a user on octodon.social. You can follow them or interact with them if you have an account anywhere in the fediverse.
If you don't, you can sign up here.
And a belated good morning, Mastodon. https://octodon.social/media/GX_hjS8rGSPIv_uKZn8
A better description because I forgot to preview the GIF: A light blue/dark blue quad pokemon (glaceon) looking at the user happily, it does a backflip and hearts appear around it.