Sculptures of Aker were rare but pictures more common. The two lions face both ways meaning saying goodbye to the old day and welcoming a new one and their names thus were "Yesterday" and "Today", in Egyptian Sef and Duau.
Aker had no temples of his own like the main gods since he was more connected to the primeval concepts of the very old earth powers.
He also guarded the gate to the Underworld and opened it for those who were ready to enter the Court of Osiris in the Judgment Hall.
The worshipping of lions in general took place in the town of To-Remu, called Le- ontopolis (Liontown) by the Greeks. It was situated fifty km north of Heliopolis.
Aker (also Akeru, Akerui meaning "the two Akers") guarded the sunrise and sunset and the passage of Re's solar boat on its daily journey across the sky.
He also took the deceased in front of the court of fourteen judges in the Underworld. He was seen as two sitting male lions flanking the sign Akhet for horizon showing the sun rising or setting in the mountains. The western peak (left) was called Manu and the eastern one Bakhu and together they supported the whole sky (the blue line atop).