Use Up, Right, Left, Down Arrows to make him strike a pose OR Use W, A, S, D to also make him strike a pose. If you're on a device that has no keyboard (or the bluetooth keyboard isn't compatible) then use the arrow keys to make him strike the pose!
Thanks to @Scratchmaker2321 for helping me with this idea because we actually discussed it for him to be in a mod of mine in FNF (Friday Night Funkin') which I need some pre-assets to start working on his mod (Dark Rein is supposedly going to be in a week in my mod (that will take some days to do the characters and charting =¬=)) (Also there isn't sound yet because I need @Scratchmaker2321 to remix this so it will be work for the both of us :/) This is the start of a new journey