Grand Dad?! A dead meme?!Yeah this Grand Dad is based off of his appearance in the Grand Dad fan game created by Red-Fire. With him being able to use many of his weapons from the fan game along with new additions too like Smol Nozomi and even his car! Oh and Bedrock too.I suppose you could check him out right herehttps://gamebanana.com/skins/164730
You're looking at the creation of one of Mario's Unknown Sequels: Super Mario Bros 7 for Dendy. BTW, there are a lot of these Unknown for you Sequels to Original NES Trilogy...