Oddly enough I think I recall him referencing his time in (of all places) Dr Who Magazine, but I don't recall a specific TF reference, but I am by no means a Death's Head completionist!
Most notably for me was reading a Death's Head ll comic. His partner, Tuck, was viewing memories of the original Death's Head (which is the dominant personality of DHll). She saw this:
Yeah. It was from what was in my opinion a woefully dumb mini, the "Incomplete Death's Head", which reprinted some, but not all, of DHI's adventures in the context of a clip show for DHII. I always thought that the conceit of DHI being DHII's dominant personality was an outright joke as DHII showed almost none of the deadpan wit, humor, cynicism, and more importantly the oddly endearing bungling that DHI exhibited. DHII was little more than a Wolverine clone to me. Anyways, another nod to his Transformers-based origin is arguably in SWORD #1 back in 2009, when he made his first reappearance in comics after a roughly 15 year absence as either DHI and DHII. In SWORD, he appears as a 30 foot tall robot which is never explained. There's an inference that this is DHI BEFORE he met the Transformers (since he's a time travelling dimension hopper), but I think any TF/DHI fan worth his or her salt knows why he's gigantic.
Eh. Different strokes. I think it's a neat interpretation of the character. I like the industrial look he has, which to me makes a little more sense befitting something that calls itself a "mechanoid" instead of whatever horned monkey man he started out as. Whatever the case, it's a heap lot better than DHII or his contemporaries, Death Metal and Death Wreck, who all apparently took a bath in the same water as Jim Lee's Wild CATs.