Will someone please be kind enough to help me analyse these two sentences?

  • What IS he LIKE?

  • What DOES he LOOK LIKE ?
What part of speech is like in these two sentences? its function ? It seems to me that the first LIKE is a preposition, and the second LIKE is a linking verb?

Many many thanks.
What IS he LIKE?
is also related to the character/personality of the person, not just the looks, as in the 2nd.

(HE is like that)

What is a pronoun, and the subject of the prep.

is -- verb

he -- subject

like -- preposition


does -- auxiliary verb

look -- verb

like -- prep.
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 Marius Hancu's reply was promoted to an answer.
Many thanks indeed!