Gender: Unspecified Location: One for the other hand
Don't matter if he could grab them or not, many of the demons and gods of the 40k universe would tear him a new one and all the Tyrnaids need is some DNA and you are going to have a million Logo Carnifexs running around.
Thus the end of the Tyranids, or...he could just kick the planet into the warp. Were talking about a guy who can keep up with Supes and possibly increase his strength depending on the circumstance.
Gender: Unspecified Location: One for the other hand
So you are saying that Lobo DNA would override the Tyranids Queen ability to take organic matter and create new warriors, I don’t think so. They can transmute any organic matter from any world or any species to what ever they need or want. I don’t know what you mean by kicking the planet into the warp? As for Lobo I’m sorry he couldn’t do squat in the warp, if it didn’t kill him outright which I say should happen even to Superman he would be stuck there.
There are so many living gods in the 40k that could simply make him not exist that it is not even funny and god like warriors that would but Superman to shame. Chaos gods that make and destroy worlds on a whim, some of the ancient Eldar Avatars are cosmic level beings, Necrons that are living metal that die and come back and the C’Tan. These are just some that would wipe Lobo from existence.