Every fighter has hidden talents of varying degrees. So yes, your fighter could have strong hiddens. You should join the forums. All the hiddens and stats are explained in a guide there and the guys that hang out there in chat are very helpful.
Blue Chips is one of many types of Special Recruits you can get. Small percentage chance to get one by basic recruiting but sometimes the forums holds events with them as a prize. I won this one in a christmas giveaway. He will have enhanced hidden stats and often they will come with boosted visible stats also.
The Bus Riders