And here we have the Dinobots, one of the most well-known groups of Transformers from all the way back in G1.

The original Dinobots roster consisted of Grimlock, Swoop, Slag, Snarl and Sludge. With this lineup, Slag is replaced with Triceratron (same personality, different name), and two characters from Universe. Why add to the dynamic?

Just cause.

Rear, Left to Right:
Snarl (Original Sins, 24-52)
Skydive (Original Sins, 24-52)
Grimlock (Confrontations, 10-52)
Triceratron (Original Sins, 24-52)

Front, Left to Right:
Sludge (Original Sins, 24-52)
Swoop (Original Sins, 24-52)
Slapper (Original Sins, 24-52)