Don’t need increasing; he’s very fast. Put him tank at war, with a Triton lvl18 left flank. Good luck in defeating such team. Perhaps 1-3 attacks may succed, while still u have the blues. Has great defense for any other colour. And being very fast, he will keep it. If Triton activates, u may chose flee already 
BTW, my Triton stats at lvl 18: Attack 846, Defense 655, HP 1121. A hero like Nadnog completes him. True love unbeatable story… +49% healing, and that without the percent given by the troops. And very fast… Jesus…