Howdy jussanuddername,
Greetings. I believe that the plural in Genesis 1:26 represents God and the angels. The word translated God is "Elohim". This word is translated in the KJV Bible usually as God, but sometimes as god, gods, angels and judges according to each context. There is some inconsistency with modern translations, where the KJV "angels" is translated "God" in Psalm 8:5, and "judges" is translated "God" in Exodus 22:8-9, eg ASV, RV, RSV. Note "heavenly beings" NIV and "God" NIV mg for Psalm 8:5, "judges" and mg "God" for Exodus 22:8-9.
Genesis 1:26 (KJV): "And God said, Let us make man in our image, after our likeness: and let them have dominion over the fish of the sea, and over the fowl of the air, and over the cattle, and over all the earth, and over every creeping thing that creepeth upon the earth."
The conclusion then is that Adam and Eve were fashioned in the image and after the likeness of God and the angels. This also indicates that the angels themselves are fashioned after the image and likeness of God. That the angels were involved in Genesis 1:26 is confirmed in Psalm 8:5.
When David contemplates the spiritual and natural creation in Psalm 8, he alludes to Genesis 1:26:
Psalm 8:3-6 (KJV): "3 When I consider thy heavens, the work of thy fingers, the moon and the stars, which thou hast ordained; 4 What is man, that thou art mindful of him? and the son of man, that thou visitest him? 5 For thou hast made him a little lower than the angels, and hast crowned him with glory and honour. 6 Thou madest him to have dominion over the works of thy hands; thou hast put all things under his feet:"
As stated above, the translators have had trouble deciding how to render "Elohim" in Psalm 8:5, eg ASV, RV, RSV render this as "God". The KJV recognises the range and meaning of the word "Elohim" in this context and translates this word as angels, as does also the LXX.
Paul quotes Psalm 8:5 in the following:
Hebrews 2:7 (KJV): "Thou madest him a little lower than the angels; thou crownedst him with glory and honour, and didst set him over the works of thy hands:"
This confirms that the word "Elohim" in Psalm 8:5 has the range to include the angels and this endorses the KJV translation of Psalm 8:5 "angels" for the word "Elohim" usually translated "God". As David is commenting on Genesis 1:26 this is then a Divine commentary that "Elohim" in Psalm 8:5 and hence also "Elohim" translated "God" in Genesis 1:26 includes the angels. God involved the angels in the creation of man, but any action on their part would involve the power and wisdom from God.
Kind regards
Trevor