The only way I can see a Physical Rentoraa set working is if you switch in on a Pokémon of the same gender so you can get an attack boost.
a special rentoraa would definitely be an odd choice, imo.
his special movepool is aweful, as is his Sp Attack (compared to his Attack).
It can live with Thunderbolt, especially since Spark looks embarrassing on it.
Are you suggesting that I replace Spark with Thunderbolt?
you should put in a starter like Goukazaru because due to the looks of it, it looks like all your pokemon are physical and/or human like pokemon (erlade looks a little human like and rentorer has a high attack stat).