In the first chapters of the novel 'Lord of the Flies' by William Golding, the boys find a paradise - they then set about turning it into a living hell. The first two boys, Piggy and Ralph, could possibly have made very good friends in other circumstances. Piggy is socially awkward, a little obese and sweaty and short-sighted (in terms of eyesight.) At first he thinks Ralph might be a nice new friend. Ralph (slim, sporty and agile) almost extends a virtual hand of friendship to Piggy, but not quite. Then, when they meet up with other boys, he joins in with their low opinions of Piggy which is quite sad. They do find a novel item, however - a stunning conch shell, the magnetism of which Piggy recognises and so they use it as a 'call to prayer' or rather a call to order.
To find out about the first two characters we meet, you have only to look at the first pages of the book...
In those first pages, we meet Piggy and Ralph. We never do find out Piggy's real name. He is a fat, awkward kid while Ralph is athletic and good looking.
The main thing that they discover in their exploration is the conch shell. They see it lying there in the water and pick it up. Piggy realizes that it could be useful for calling to find out if others have survived the crash.