MLJ Comics (later Archie Comics) only rarely had characters of color. Some that did appear would be low on the offensive scale. In one Bob Phantom story a young "Negro" character gives considerable help to the hero. He is portrayed as brave and smart. He is drawn fairly realistically, but his speech could use a bit of work. The most offensive thing about him, in my older white-guy opinion, is his name: Snowball.
On the other hand, early stories of the Hangman contained a character known as Anthracite (as in coal) who was off the charts offensive. It is had to believe just how offensive he was. Let's just say he was drawn less human looking than Donald Duck. Those stories would be in Pep Comics starting about issue #18.
Ebony White in The Spirit strip started out as an adult licensed cab driver. Eventually he youthened to maybe thirteen years old. Whatever you think of how Ebony was drawn, or how he spoke, he was portrayed as a very brave character. No matter how scared he was, Ebony always tried to save the Spirit, or anyone else in trouble.