Description from deviantart source:

“In a previous drawing I talked about a “guard exchange program” to strenghen the alliances between creatures. The first ones were dispatched to Twilight’s guards.

They were from left to right (the names in bold are canon names either given by the show, merch, fandom, ect):

Gaston, from the Griffons

Maxilla, from the Changelings

Citrine Cloud, from the Crystal Ponies

Stratus Skyranger, from the Hippogriffs

They formed the first members of the C.E.U. (Creature Exchange Unit). Just like the other parts of Twilight’s guards, they were looked over by Captain Tempest Shadow.

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I decieded rather than create new characters, I use ones who are part of the show. To have that little connection~