During his Phantom journey, Adam had already faced or seen the Top-10 monsters of the Purple Threat Level several times.
Moreover, he had personally defeated the Top-2 Thunder Demon, and together with Alexia they had handled the Top-4, North Keeper, in this lab, he had to eat the heart of the Top-7, Bladeclaw Beast to heal his arm.
Thus, when Snow Follower, Top-9 among Purple Threat Level appeared, Adam saw all monsters except Top-8 and Top-1. He didn't fight all of them, but he saw everyone except those two in battle.
"Oh... He is Top-9? He looks stronger... much stronger than some Frost Beast that is a Top-6... Alexia dealt with him pretty quickly..." Adam muttered, remembering the events from Eclipse.
Frost Beast was the first Top-10 monster Adam had met, he didn't fight against it, Alexia had taken that role.
Magnus nodded.