[1] Script editor Tony Barwick, who commented on what he perceived as the series' "quite formalised writing", wrote Blue as "the foil, the nice guy" of Captain Scarlet.

[3] It has been suggested that Blue's blue-eyed and blond-haired appearance influenced that of Commander Ed Straker, Bishop's live-action role in the later Anderson series UFO.

For example, in the episode "Winged Assassin", Blue attempts to prevent Scarlet from suicidally ramming the wheels of a Mysteronised airliner using a Spectrum Pursuit Vehicle (SPV).

For example, in "Renegade Rocket", he refuses to leave a military base that is being targeted by its own missile, electing to remain behind with Scarlet in an attempt to find the self-destruct code, and in "Special Assignment", being unaware that Scarlet's discharge from Spectrum is in fact part of the Captain's undercover mission, leaves Cloudbase without authorisation to find and reason with his friend.

In the 2005 remake, Blue is still a brave Spectrum officer and loyal companion; however, he is of stronger build and speaks with a rougher accent.

[9] Cultural historian Nicholas J. Cull comments that Blue's nationality, coupled with his status as a "strong supporting character", is representative of a general shift away from the predominantly American protagonists of earlier Anderson series, including Thunderbirds.