The pfp that intrigues me the most on farcaster is EVMavericks. 

Whats the lore here?

Ben's nailed it really. Ethfinance daily discussion was the best forum anywhere to get information about not only Ethereum but all crypto really.  It's now been merged with the daily over at the ethereum subreddit which is still good but slightly lower signal to noise ratio.

These were given out to contributors so a lot of prominent people in Ethereum got one. 

The collection has about 1600 lions in i think, there's a discord group too.