As long as your "friend" has something resembling a face, they're probably fine. Humans like faces, and the majority of people here seem to be human or human-adjacent. I cannot speak for the non-human-or-human-adjacent people.
Though if your friend is an eldritch horror or a giant spider or something, a paper bag with a smiley face might be a good idea, at least until everyone gets used to them.
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Though if your friend is an eldritch horror or a giant spider or something, a paper bag with a smiley face might be a good idea, at least until everyone gets used to them.