I'm not sure if this is considered an appropriate post, I hope it is but if not, my apologies. I've heard this distinct instrument a couple times. I'm not sure what it is but am really fond of it, and I can't describe it but I think it is probably brass. I only know a smattering about instruments from school but I couldn't remember this one.
I have two songs where I can remember it, I've linked them below at the times I feel this instrument is most clear, unfortunately I think both songs share a bunch of instruments.
Me for You (Spongebob)
Felyne Kitchen (Monster Hunter Something)
Again I am sorry if this is kind of post is not usually appropriate here. Thank you for taking the time to read though.