The Grin.
Bella, and the demons surrounded the tall doors. They were specially made to stop anyone from entering. However, they weren't built to survive the onslaught of the Demon General's attacks. After all, the Demon General's strength changed drastically depending of the rank.
Bella was a Demon General of Eight rank. The doors could perhaps survive someone of rank fifty, but someone in the top ten was unlikely.
She raised her bronze-colored fist, and smashed it into the metal doors. A large dent appeared. Following her, the rest of the Commanding Demons unleashed their spells—glowing spheres, long glowing whips, and flying spells.
Once the glowing spheres struck the door, they exploded, causing more dents to arrive. The long glowing whips lashed across the door, leaving behind a long cut, and finally, the flying spells blasted through the door.