re: New hire in our group is incredibly weird and socially awkward. Help me not get fired baws

Help him understand his purpose, know that he is part of your organization, its mission and his role, and demonstrate how your team will support him to set him up for success.
Find out his strengths and development areas and show him how to utilize former and create a development plan for the latter. Illustrate for him who his key stakeholders are for the output/impact of his role.

Then, get out of his way.

Until then, try to get out of your own way flip your energy to support vs. ridiculing.