There is confusion about several members of this band.
Japan Metal Indies states that NORI and HIRO were members early on, but this seems incorrect as the HEAVY METAL POWER ON!! omnibus (1983) and BACK FIRE single (1985?) both list DAISUKE as guitarist. Furthermore, a magazine from 1987 confirms that NORI and HIRO were present for the band's activity restart in March 1987.
Some sources state that Sighs of Love Potion bassist SEXY ROSE HARRY was in a band called either PROWLER or PLOWLER, which would likely refer to this band. However those sources also assert that HARRY was once a member of X, which is not known to be true (they are probably conflating him with HALLY), so the “PLOWLER” detail may be incorrect as well. Details are unclear.
SHIGEO seems to be called “SHIEGO” by several sources, but the artwork of BACK FIRE uses the [much more common] spelling SHIGEO.
LES ENFANTS TERRIBLES refers to the drummer who played alongside TAIJI as SHIGERU (シゲル), but we assume this is a mistake (or possibly SHIGEO's real name) as SHIGEO was already known to be the drummer before and after that point.
Lastly, there is a 2022 YouTube video interview with “bassist TOMMY”, but a photo shown during the video confirms he is the same person as HIROTOMI. As far as we know he was never called TOMMY while with the band.
PROWLER (プローラー) (プロウラー) is formed by DAISUKE in Tokyo (東京)東京.
G. DAISUKE (ダイスケ) / (?)
A 1984 magazine list the band's lineup as follows. Vocalist Seibun and guitarist Daisuke are the same as other known lineups but the bassist and drummer and not recognized. Details unclear.
V. Aoki Seibun (青木清文) / G. Hirokawa Daisuke (広川大輔) / B. Umemoto Eikichi (梅本英吉) / D. Harada Munesada (原田宗貞)
Bassist TAIJI joins briefly after leaving DEMENTIA (probably indicating that a previous bassist seceded around this time), but immediately secedes due to disagreements with SEIBUN without even playing one live.
Presumably soon after, bassist HIROTOMI joins.
V. SEIBUN (セイブン) / G. DAISUKE (ダイスケ) / B. TAIJI / D. SHIGEO / (?)
↓
V. SEIBUN (セイブン) / G. DAISUKE (ダイスケ) / B. HIROTOMI / D. SHIGEO
Around June of some year (probably 1986 or later, as DAISUKE seemingly had shows planned through August 1985), guitarist DAISUKE secedes and is replaced by HISATO.
V. SEIBUN (セイブン) / G. HISATO / B. HIROTOMI / D. SHIGEO
Around this time, guitarist NORI and bassist HIRO join.
V. SEIBUN (セイブン) / G. NORI / B. HIRO / D. SHIGEO
PROWLER (プローラー) restarts activity.
PROWLER (プローラー) was a non-vkei band in Tokyo. They were active around 1980 and are now disbanded.