The information didn't have a source link, so it couldn't be confirmed. Do you have a source link? Your contributions are appreciated, but unless you have a source link there's no way to be sure it's accurate.
The easiest way is to save the image from the wiki's photo library to your computer. Then go to your profile and upload the image as your avatar image. The more advanced way is to copy the URL for the image and when uploading your avatar image you can paste the URL into the address field. I recommend the first way. If you don't want the image on your computer, you can delete it after uploading.
I understand your concern, however this user hasn't been active for a couple months. If they return and vandalize the wiki, I will certainly consider blocking them. I reversed the changes they made to the Pinki Lili page. Thank you for watching out for the wiki!
Thank you for adopting this wiki! (As well as fixing my mistakes...) A while ago I started trying to add things to pages of the wiki that didn't have much/anything but... turns out I suck at even doing that. So, thank you for making those pages even better.
How nice of you to say, Bunnyboo1312! I've worked on another wiki and I was inspired by the progress that had been made on this one, so I wanted to help expand it. I appreciate what you added. I'm glad you carried the baton for this wiki and that you like the changes!
1 ) I will start editing ASAP. I am a fast editor.
2) I can help out by removing spam and appointing hard workers and good users. I am passionate about this community and I would try my best. I would like to try because I hate spam and vandalism, I am quick to act on vandalism, and I can make 100 edits in a day if needed.