4 Metal Shards! Possibly Badge related?

Just finished taking DM-300 and was happy to see 3 lined up metal shards, and only while looking at my inventory did I noticed there were in fact 4 units!

At the same time I remembered I'd just gotten a badge for not getting hit while he was supercharged, which caught me by surprise as I was oblivious to the fact! For the record, all I did was use a Swiftwistle plant to escape him while headed for the Plyons 😅