Received initial training in conventional artillery and served with a 155mm battery. Graduated top of his class at Special Weapons School. Crewed the HAL Heavy Artillery Laser. "He's soft-spoken and calm, just a bit shy. Intelligent. Loves to read escapist fantasy."
Grand Slam is a G.I. Joe team operative in the A Real American Hero line. First released as a Hasbro carded action figure in 1982, with 3 distinct figure versions produced across the 1982 to 1994 vintage run.
Grand Slam did not appear by name in the Sunbow or DiC cartoon series synopses. Original Hasbro file-card lore and Marvel ARAH comics appearances are the primary characterization sources.