Steve gives a good answer, but in regards to those things Christians do profess, such as God's infinite goodness. That question is not answered by science but through simple philosophy. One may ask for instance, "is it possible for God to be both good and bad?". CS Lewis covers this in depth in Mere Christianity in the opening chapters.
Basically, the ying yang view of the world does not work, good and bad are not opposites like black and white, that is a misrepresentation.
It is more accurate to say there is good (or holiness, or love, or whatever you want to call pure goodness)and then there is the curruption of good. In other words evil does not exist alone, it can not exist alone, for it is nothing except the absence of love or goodness, not something alone by itself. Read Lewis for an in depth answer.
These things could be debated one by one, but as Steve mentions in his answer, the way God is portrayed in the Bible is as the "hidden God".
The clues we have about His nature are almost all related to how He loves us. You will find over and over again God defined as perfect Holiness.
In the end Christians see God as a being (horrible word) who is fully and completely aware of our sufferings. God cares, it He takes sides, He is Love. The metaphor Jesus uses is "father". He loves us like a perfect father.