Not long ago I finished watching this anime and I must say I love it
Tenkai Knight is about 4 knight (five later) Bravenwolf, Lythingdor, Tributon, Valoron and Dromus (Who joins later on in the series). Who stops the evil corrupted being controlled by Vilnius and his minions Granox and Slyger. This Knight on earth are kids whose names are Gurren, Ceylon, Chookie, Toxsa and Gen. Venatta also known as Beni was evil until the end of the series. However warning she is very annoying.
This show had good animation, voice actors, and character development. However, there were a few thing that still needed to be answered like what happened to the Guardians and how did Gurren's dad know about the Tenkai Knights I wish there was a season 2.
This show reminds me a bit of lego and sometimes transformers.
I would say give this show a go.