Melittin felt the same way- that Headbutt was no picnic. However, despite that powerful blow, the Mega Evolved Bug/Poison-type saw his opportunity and seized it immediately- Missingno. had left its abdomen wide open, and it was to that abdomen Melittin delivered the piercing Drill Run attack. The beast trilled in pain in response to the attack, but almost immediately struck back, pelting Melittin with a particularly fiery Hidden Power- a super effective blow!
"Mel, hang in there, you're doing great!" Keith called encouragingly. "Use Focus Energy, then give it a taste of your Twineedle attack! Then follow up with another Drill Run- that seemed to work best!"
"Wat type is it anyways?" Meowth asked Keith.
Keith shrugged. "At the moment?" he replied. "Who knows? From what I've read, Missingno. in Kabutops Skeleton Forme change their type randomly. Based on how effective that Drill Run was, it could be a Rock-type or a Poison-type at the moment. Like I said, completely unpredictable." These words did little to comfort Meowth, but considering how strong Melittin was, especially when Mega Evolved, he couldn't help but feel at least a little optimistic here.