Ultimate Spider-Man Vol.1 issue 111 has first appearance of Ultimate Spot.
If anything, minor key.
Issue 111B variant has him on the cover, so I’ll let you decide on if that’s a first cover appearance or solely a first appearance in general.
I don’t think the ultimate version of this character should be mentioned at all. Not a big character at all. Feel free to add it into your own database 
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Thank you!
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