No big deal, I am sure he looks fone without it, I just like to see what justification is made, you know, for a laugh..

"Sentinel Prime soon decided to allow his shield to transform into a BBQ, for those times, after the battles when he just needs some R &R and a coldie. Although he soon discovered that Transformer sized BBQs were a rarity on Earth somewhat limiting his ability to blend in."

That would then lead on to "Wednesday afternoon Cocktails with the Girls Sentinel Prime"