Still one of the best pets in game after the companion rework, in fact, now its even better.

MOD BREAKDOWN

1. Viral Quills and Panzer Devolution - Quills allows your Panzer to spread viral throughout rooms and Devolution gives it infinite lives. An important thing to not about Devolution is that the Larval form counts as your Panzer being alive which means the buffs from Tenacious and [Reinforced Bond] will always remain active. If you were to remove Devolution then whenever your Panzer gets downed you would lose all Bond buffs until it is revived.

2. Martyr Symbiosis and Tek Assault - Martyr gives your warframe a health gate by sacrificing your Panzer to save you from lethal damage. [Tek Assault] will save your Panzer from lethal damage. Both of these mods have no cooldown so they can theoretically proc multiple times in a row granting you and your Panzer multiple health gates in quick succession.

3. Tenacious Bond and Bite - Tenacious headshot recovery time feature does not work with [Panzer Devolution], however the Critical Damage buff does work. [Bite] is used to boost our Critical Chance over 50% so that Tenacious Bonds effect can take place and grant our weapons with a final 1.2x Critical Damage multiplier.

4. Reinforced Bond and Calculated Redirection - [Reinforced Bond] will give your weapons 60% more fire rate if your companion has a maximum shield value of 1200. It will also allow you to restore your companion with shields every time you reload. Redirection is used to boost the Panzers shields over 1200.

5. Synth Deconstruct - This mod is useful when using [Equilibrium] on your Warframe as every enemy the Panzer damages will be more likely to drop health. This however is flexible and can be swapped for anything.

6. Fetch - Must have mod, provides you with a loot magnet.