I hate writing about myself. I do, however, like using different avatars on different sites. The common sense thing to do would be to use the same avatar on different sites so people know it's you (my Mastodon one is very similar to my Twitter one so migrating people will hopefully recognise me). Especially on the Fediverse where I have a Mastodon, Bookwyrm, Kbin and Lemmy account, all with different avatars and usernames. My bio tells you about my other accounts! Or at least it tells you about some of them. This one (well, you can check it yourself) has some meta text about my avatars, my Lemmy one just describes the avatar, and on Mastodon it's "rescuing princesses since tea-time". Something I thought of for Twitter many years ago. I changed it there eventually, but decided to resurrect it.