Answer:
The character that is described in these lines is Beowulf
Step-by-step explanation:
The lines "Fearful in spirit, faint–mooded waxed he, Not off could betake him; death he was pondering\" from the poem "Beowulf", show the big impression the monster get in the confrontation with Beowulf and this words are the ones used to describe his presence and characteristics, Then the monster is describing Beowulf.