Christian angels are messengers or go-betweens between God and humans and can be fully human in appearance-
"Do not forget to entertain strangers, for by so doing some people have entertained angels unawares"- (Hebrews 13:2)
But if you ask an angel its name you'll probably get a reply like this-
The angel said-"Why do you ask my name? It is beyond understanding" (Judges 13:17/18)
Some angels are big and powerful-
"And God sent an angel to destroy Jerusalem..David looked up and saw the angel of the Lord standing between heaven and earth, with a drawn sword in his hand extended over Jerusalem" ( 1 Chron 21:15/16))
David never had a camcorder so all we can do is speculate on what he saw..
"..praise to the Lord, to him who rides the ancient skies above,
whose power is in the skies." (Psalm 68:33-34)