This is Prince Leo's new form, the Leo Knight. It is a modified version of the Dark Knight armor, but with the dark magic removed and a lion-shaped helmet.

Notes:
1. MrBLUERANGERHERO wanted the Dark Knight version to have the lion mane, too, but I told him that would likely give his identity away. So it's only used for the heroic version.
2. Before finally deciding on silver, MBRH considered for him to be dark red, but I told him that that would make the series seem too much like Mahou Sentai: Magiranger/Power Rangers: Mystic Force.
3. Excluding the TUFFRangers, he is the second extra hero in Super Animal Squadron, following the Avenger Knight in Soaring Squadron: Skyranger. Interestingly enough, both he and his predecessor have a sister. However a difference is that the Avenger Knight's sister is younger while Leo Knight's sister is his twin.