Statue of Cherub Angel at St. Peter's Basilica

In Ezekiel's vision he also describes another type of angelic beings that seem to be associated with the Cherubim. Their description is even more strange, to our eyes.

In Istanbul, Christopher Howse views an angel unseen for 160 years--Seraphim are associated with the serpent, a symbol of the healing arts (because snakes shed their skin and become renewed). In modern medicine, two serpents twine around the 'caduceus,' a healing wand which, in ancient Greek mythology, was carried in the hand of Hermes, a winged messenger of the gods. In both Byzantine iconography and classical western art, it was common to often depict only the faces and wings of these angelic beings

Certainly an amazing scene. Ezekiel's vision might seems strange, it might well be that human eyes and senses just can't properly describe the wonder of heaven.

The Bible doesn't say how many Cherubim there are, but we're told that Ezekiel saw four - and there may be more than that! 

Their role is to guard God's Holy domain and presence from any sin and corruption. They are sometime known as the throne angels as they are seen to be around the throne of God.

In Jewish folklore the 'Throne Angels' are known as Merkabah.

Having four faces on four side of their heads and being arranged in a square, they can travel in any direction without having to turn.

The word Cherub may come from a term 'to guard' which would fit well with their role. No where in the Bible are the Cherubim directly called angels!

So far from being cute, cuddly creatures, the Cherubim are the mighty and powerful guardians of God.

https://www.whyangels.com/seraphim_cherubim_creatures.html
https://www.quora.com/What-is-the-difference-between-Cherubim-and-Seraphim
https://hubpages.com/religion-philosophy/AngelsAFieldGuide-tAngelsinWesternCulture